I need help with these two questions.

I Need Help With These Two Questions.

Answers

Answer 1
I don’t know 22 but I think 21 is B
Answer 2

21 food and oxygen

22 H


Related Questions

What is inside of the nucleus that gives every cell it's characteristics

Answers

Answer: DNA which is the genetic coding inside each of our cells which helps tell the cell what to do which also helps give us our unique characteristics like if we have brown or blue eyes or blonde or brunette hair.

Who was the first person to classify fingerprints in to worlds loops in arches

Answers

The correct answer is Francis Galton.  

He discovered three kinds of a pattern of fingerprints, that is, arches, loops, and whorls. Arches are witnessed in approximate 5 percent of the patterns of fingerprints encountered. Loops take place in approximately 60 to 70 percent of the patterns of fingerprints encountered.  

While the whorls are witnessed in about 25 to 35 percent of the pattern of the fingerprints encountered.  


Answer:

The answer is Francis Galton.  

Explanation:

He found three sorts of an example of fingerprints, that is, curves, circles, and whorls. Curves are seen in rough 5 percent of the examples of fingerprints experienced. Circles occur in roughly 60 to 70 percent of the examples of fingerprints experienced.  While the whorls are seen in around 25 to 35 percent of the example of the fingerprints experienced.

what is the difference between sex-linked traits and autosomal traits in humans

Answers

Females are homologous, XX, for the sex chromosomes, whereas males are heterozygous, XY. ... Does it make a difference if the gene is located on a sex chromosome or an autosome? It might. Autosomal-linked traits are due to genes on the autosomes; sex-linked traits are due to genes located on the sex chromosomes.

Sex-linked traits are passed along on the X or Y chromosome. Autosomal are passed on the other 22 non-sex chromosomes.

What would happen if we did not have either an ozone layer or magnetic field around the earth

Answers

can you please ask a qustion not make a statment lol cant anser them

Spastic paralysis suggests involvement of the

Answers

I suffer spastic paralysis by birth. in volunteering muscle control .it very difficulty walking and talking.standing. suggest to physiotherapy and physical therapy
Final answer:

Spastic paralysis typically involves the upper motor neurons of the central nervous system. Damage to these neurons causes symptoms such as muscle stiffness and contraction. Conditions such as multiple sclerosis, cerebral palsy, and spinal cord injury can lead to spastic paralysis.

Explanation:

Spastic paralysis is a medical condition typically involving the upper motor neurons of the central nervous system. These neurons play a crucial role in controlling the activities of lower motor neurons, which are directly responsible for muscle movement. When there is damage or involvement of these upper motor neurons, it can lead to a condition known as spastic paralysis. This condition is characterized by muscle stiffness and contraction, often leading to impaired movement and coordination.

Some examples of conditions that can cause spastic paralysis include multiple sclerosis, cerebral palsy, and spinal cord injury. Treatment often involves managing symptoms and may include physical therapy, medications to reduce muscle spasticity, and sometimes surgery.

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The external coverings of diatoms are made up of , while slime molds have cell walls containing . Diatoms are because they make food through photosynthesis, while slime molds are because they eat decaying plant matter.

Answers

The external coverings of diatoms are made up of silica, while slime molds have cell walls containing cellulose. Diatoms are autotrophs because they make food through photosynthesis, while slime molds are heterotrophs because they eat decaying plant matter.

1. Diatoms are single-celled organisms that belong to the group of algae known as Bacillariophyta. They have a unique external covering called a frustule, which is made up of two overlapping halves that fit together like a pillbox. The frustule is composed of silica, a hard, glass-like substance. This silica shell gives diatoms their intricate and beautiful shapes, and it also provides protection for the cells.

2. Slime molds, on the other hand, are not true molds or fungi. They belong to the group of organisms known as protists. Slime molds have cell walls made of cellulose, which is a complex carbohydrate found in the cell walls of plants and some other organisms. The cellulose provides structural support and protection for the slime mold cells.

3. Diatoms are autotrophs, which means they can produce their own food through photosynthesis. They have chloroplasts, the organelles responsible for photosynthesis, which contain chlorophyll and other pigments. These pigments capture sunlight and convert it into chemical energy, allowing diatoms to synthesize organic compounds, such as glucose, from inorganic substances like carbon dioxide and water.

4. Slime molds, on the other hand, are heterotrophs, which means they cannot produce their own food. They obtain nutrients by ingesting organic matter, such as decaying plant material or bacteria. Slime molds use enzymes to break down the organic matter into simpler molecules that can be absorbed and used as a source of energy and nutrients.

In summary, diatoms have silica-based external coverings and are autotrophs that make food through photosynthesis. Slime molds have cellulose-based cell walls and are heterotrophs that obtain nutrients by consuming decaying plant matter.

Complete question :-

The external coverings of diatoms are made up of                 , while slime molds have cell walls containing                       . Diatoms are because they make food through photosynthesis, while slime molds are because they eat decaying plant matter.

Marine organisms adapted to the coldest temperatures and the highest salinity levels would inhabit which zone?

Answers

The correct answer is: Abyssopelagic or Hadalpelagic zones, because these zones are deepest marine zones.

There are 5 main marine zones (and a few subzones):

1. Epipelagic zone (200 m) – the sunlight zone where is s most of the life in the ocean.

2. Mesopelagic (1000 m) – the twilight zone many of the organisms who live in this zone have special adaptations

3. Bathypelagic (1-4000 m) – the midnight zone

4. Abyssopelagic (4-6000 m)

5.  Hadalpelagic zones (6-11000 m).


Final answer:

The abyssal zone is where marine organisms adapted to the coldest temperatures and highest salinity levels would be found, characterized by extreme conditions and a food chain based on chemosynthetic bacteria.

Explanation:

Marine organisms adapted to the coldest temperatures and the highest salinity levels would most likely be found in the abyssal zone of the ocean. The abyssal zone is characterized by extreme conditions, including very cold temperatures, very high pressure, and high salinity, particularly near hydrothermal vents where salinity can be higher due to the expulsion of minerals. No photosynthetic plants are found here, as there is a lack of light; instead, the food chain is based on chemosynthetic bacteria that utilize hydrogen sulfide from these vents as an energy source.

In the stratosphere, _____ blocks harmful uv rays

Answers

Ozone layer

Ozone layer blocks the harmful uv rays

Answer:

Ozone layer

Explanation:

What would happen if translation did not occur?

Answers

Translation is the reading of the mRNA into a protein. If translation didn't occur, then there would be no proteins made, and hence life would cease (you need proteins for life).

Final answer:

Translation is necessary for synthesizing proteins from amino acids, which are important for the structure and function of cells. Errors or absence of translation could lead to the production of defective proteins or halt the protein production altogether, leading to a variety of hereditary and age-related diseases.

Explanation:

Translation is the biological process utilized by ribosomes to synthesize proteins from amino acids. If translation did not occur, the correct proteins would not be made. These proteins are essential for building important body tissues and carrying out vital functions. For instance, these proteins might be crucial in neuronal communication. In the absence of translation, the body's cells would be unable to execute these functions optimally, leading to various issues. Errors in translation could lead to the production of defective proteins or halt the production altogether, leading to a variety of hereditary and age-related diseases.

An example of a translation failure can be the mutations in tRNA and rRNA, which would lead to the production of defective proteins or a complete cessation of protein production. Furthermore, if translation termination does not occur properly when encountering a nonsense codon, the produced proteins would not be released correctly, leading to further complications. Thus, without translation, life as we know it would not be possible, as every function in our body relies on the proteins synthesized by this process.

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Arrange the events that are believed to have formed the hydrosphere in their order of occurrence. arrival of icy debris precipitation in the form of rainfall bombardment of comets and meteorites rising of water in the form of vapor boiling of water due to Earth’s enormous heat condensation of water vapor

Answers

The right order of the events is:

1. bombardment of comets and meteorites;

2. arrival of icy debris;

3. boiling of water due to Earth's enormous heat;

4. rising of water in the form of water vapor;

5. condensation of water vapor;

6. precipitation in the form of rainfall;

The water on our planet arrived in the form of icy particles, and it was brought by the millions of meteorites and comets that contained this icy particles. Because the Earth was still very hot, this icy particles were melting immediately and they were boiling. As there were more and more icy particles coming to our planet, from their boiling, the water vapor was increasing int the Earth's atmosphere. After there was sufficient amount of water vapor in the atmosphere, the water vapor started to condensate as it was getting higher into the atmosphere, thus creating clouds. From this initial clouds, the first precipitation in the form of rainfall appeared. At the start it was not a rainfall as we known it, but is was a very acidic rain because it contained lots of other gasses in it, but it set the basis for the Earth's hydrosphere.

The events in their order of occurrence are as follows: bombardment of comets and meteorites, arrival of icy debris, boiling of water due to Earth's heat. rising of water vapor. condensation of water vapor, and precipitation forming oceans.

This sequence emphasizes the importance of cometary impacts and Earth's cooling process. Finally, the precipitation filled basins to create the first oceans.

The formation of Earth's hydrosphere involved several key events. Here is the correct sequence of these events:

Bombardment of comets and meteorites: Earth was struck by icy debris, which is believed to have contributed water and organic compounds necessary for life.Arrival of icy debris: This icy material accumulates on Earth's surface.Boiling of water due to Earth's enormous heat: The intense heat of early Earth caused the water to vaporize.Rising of water in the form of vapor: Water vapor rises into the atmosphere.Condensation of water vapor: Water vapor condenses to form clouds.Precipitation in the form of rainfall: As the surface cooled, water fell as rain, eventually collecting in basins to form the first oceans.The hydrosphere's formation highlights the significant role of cometary impacts and Earth's cooling, leading to the water cycle we observe today.The hydrosphere refers to all the water present on or near the Earth's surface. It includes water in various forms such as oceans, seas, rivers, lakes, groundwater, glaciers, and ice caps.The hydrosphere is primarily composed of water, which exists in three states: liquid (water bodies), solid (ice and glaciers), and gas (water vapor in the atmosphere).

Renal failure is the severe impairment or total lack of _______ function.

Answers

kidney

i have to write up to 20 characters or watever


YEEEEEEEEEEEEEEEEEEEEEEET ITS KIDNEY


A group of biologists would like to recreate suitable habitats for wildlife in a particular area. They would also like to help fight climate change. To achieve these goals, the biologists decide to increase the density of trees and the canopy thickness in the area. Which biodiversity restoration method should the biologists use?

A. biological augmentation

B. reforestation

C. bioremediation

D. canopy fogging

Answers

Reforestation is a biodiversity method that can increase the biodiversity by replanting with trees.

Answer: B. reforestation

Reforestation is the process of growing plants and trees in an area on large scale in order to create land a forest reserve which can allow the growth and abundance of floral and faunal species in future. Reforestation is the biodiversity restoration method that the biologist should use to meet their goals like : recreation of habitats for wildlife in a particular area, help against climate change as plants are the fixers of atmospheric carbon utilize this for photosynthesis and prevents the raising of atmospheric temperature.

Which process contributes to the formation of ground water

Answers

Answer:

Percolation

Explanation:

Percolation is the process of a liquid slowly passing through a filter. Percolation comes from the Latin word percolare, which means "to strain through." Percolation happens when liquid is strained through a filter, like when someone makes coffee.

Percolation is the water cycle process by which liquid water flows through the soil due to the force of gravity.

When scientists first started mapping human genes, they estimated that there were about 2 million genes. By the late 1990s, it was thought that there were only 100,000 genes, and then that number shrank to 19,000 in 2001. Most scientists now believe that humans have about 21,000 genes. Which statement describes these estimates?

Answers

I have the options on e2020. So first, we can definitely mark out D because no way did they stay the same over time. We can cross out B because as scientist "upgrade" over the years, their work will become MORE accurate. Not LESS accurate. So then we are left with A and C. We can cross out C because its doesn't really become accurate and less accurate over time. Then we are left with A which is our answer because scientist can only become more accurate as time goes by with all the new technology advancements they're making.

Hope this helped!! :D (please read whole thing so you understand)

Answer:a

Explanation:

a

YOOO HELP ASAP 10 POINTS Select the correct answer. An organism was hunted almost to extinction, but the population bounced back. Which evolutionary change did this species most likely experience? A. bottleneck effect B. migration C. mutation D. sexual reproduction E. disruptive selection

Answers

The answer is; A


Bottleneck effect occurs when a population is reduced drastically such that the genetic diversity of the population is reduced. The surviving  population represents only a small proportion of the allelic frequency of the population. Therefore, as this population recovers, only a few alleles of the former population is recovered in the genetic drift. This is how the diversity of the population is reduced and can fail to adapt  to environmental changes.  


Answer:

A Bottleneck effect

Explanation:

What is true about lagging strand during dna replication a.It has the same sequence as the leading strand b.It contains okazaki fragments c.It is synthesized before leading strandd.It is synthesized in the 5 to 3 direction

Answers

Correct answer: It contains okazaki fragments

During DNA replication two strand is formed one is called leading strand and another is called as lagging strand. Leading strand is said to be parent strand and it replicate in 3'-5' direction, while lagging strand replicate discontinuously in 5'-3' direction.

Lagging strand is one of the two strand which is found in the DNA, which replicates discontinuously in the form of short section. These sections are called as okazaki fragments.

Okazaki fragments found in eukaryotes are in the size range of 1000 to 2000 nucleotides and in prokaryotes it is 100 to 200 nucleotides long.



NEED ASAP!!!
After its formation, early Earth experienced several crucial events that were responsible for creating its spheres. Match each Precambrian event to the sphere it played the biggest role in creating

ANSWERS
Frequent volcanic eruptions emit large amounts of carbon dioxide.
Clouds form, followed by rains.
Molten lava solidifies into a solid crust.

MATCHES
lithosphere

atmosphere

hydrosphere

Answers

atmosphere - Frequent volcanic eruptions emit large amounts of carbon dioxide

hydrosphere - Clouds form, followed by rains.

lithosphere - Molten lava solidifies into a solid crust.



give me brainliest answer

The matching of each Precambrian event to the sphere it played the biggest role in creating is as follows:

Frequent volcanic eruptions emit large amounts of carbon dioxide: Atmosphere. Clouds form, followed by rains: Hydrosphere.Molten lava solidifies into a solid crust: Lithosphere.

What is Atmosphere?

An Atmosphere may be defined as an envelope of numerous gases that significantly surrounds the celestial body like the Earth in a precise manner.

It is believed that the process of volcanic eruptions results in the formation of the atmosphere, clouds followed by rains into the hydrosphere, and the solidification of molten lava into the lithosphere.

Therefore, The matching of each Precambrian event to the sphere it played the biggest role in creating is appropriately described above.

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Which statement accurately describes Darwin’s experience on the Beagle? A. He had a eureka moment and understood how species evolve. B. He recognized the significance of each species he observed. C. He collected a vast amount of data and observations that fueled later theories. D. He was unsurprised by the variety of species he observed.

Answers

C --> He collected a vast amount of data and observations that fueled later theories

Final answer:

Charles Darwin made significant observations during his voyage on the Beagle that helped him develop his theory of evolution, including the diversity of life in different habitats and the variation in species on the Galápagos Islands.

Explanation:

During his voyage on the Beagle, Charles Darwin made many observations that helped him develop his theory of evolution. One observation was the great diversity of life he encountered in different habitats, such as tropical rainforests. Another observation was the variation in species he observed on the Galápagos Islands, particularly the different beak sizes and shapes of finches. These observations provided important evidence for natural selection and the idea that species can change over time.

Under which branch of oceanography would one study the water cycle?




Please help me

Answers

Marine Geology

Tell me if I'm right.

A DNA molecule has the sequence GCATCCGA. What is the mRNA sequence resulting for this DNA code? A) CCTAGGCT B) CGTAGGCT C) CGUAGGCU Eliminate D) GCATCCGA

Answers

uracil replaces thymine in mRNA, so c

id say the answer is C

The inner membrane of mitochondria consists of many folds.What is the purpose of this membrane

Answers

The purpose of this membrane is to maintain homeostasis in the body by regulating what enters and leaves the body. It is also part of the large process of movement of materials in your body.

Answer:

To increase the surface area.

Explanation:

Mitochondria is known as the energy house of the cell. The formation of ATP occurs in the mitochondria in the firm of aerobic respiration. Mitochondria is the semi autonomous organelle that contains its own DNA.

The mitochondria contains the outer and inner membrane. The inner membrane is folded into finger like projections known as cristae. These helps in increasing the surface area of the inner membrane and increases the rate of electron transport chain.

Thus, the answer is to  increase the surface area.

The mitochondrion is host to which portion of cellular respiration? (2 points)
A. Glycolysis
B. Alcoholic fermentation
C. Lactic acid fermentation
D. The Krebs cycle

Answers

The mitochondrion is host to The Krebs Cycle

It would be the Krebs Cycle!

Give one example of a molecule using passive transport and one example of a molecule using active transport.

Answers

One example of passive transport is diffusion, when molecules move from an area of high concentration (large amount) to an area of low concentration (low amount). Molecules are said to naturally flow down their concentration gradient

Answer:

passive- glucose, salt or H2O.

active- proteins, poly nucleotides, or polysaccharides

Explanation:

A dentist hypothesizes that patients that floss their teeth every day will have fewer cavities than those that don't. He questioned several of his patients regarding their flossing habits and then compiled the table found below. Patient Name Flosses daily? Number of cavities Jamal Y 2 Kendra N 4 Stephanie N 1 Brandy Y 3 Travis Y 1 Does the dentist's data support his hypothesis? A. Further research is needed. B. Yes; flossing daily prohibits the formation of cavities. C. No; flossing daily actually increases the number of cavities. D. Yes; flossing daily definitely reduces the number of cavities.

Answers

Im not sure, but i think its a because you need more evidence and its not an even amount of people, good luck though

Answer:

A.) Further research is added

Explanation:

There are not enough people that were questioned therefore you would need more people to test. I did the Study Island.

Discuss the connection that can exist between a season of acorn production and an increase in the number of cases of lyme disease

Answers

Acorns are an important food source for the white-footed mouse which is popular target of the ticks that carry the Lyme bacterium and transmit it to the host like human.

Lyme disease is an infection disease characterized by The an expanding area of redness on skin, followed by rash. Other e symptoms may include fever, headache and tiredness. Lyme disease is transmitted to humans by the bite of infected ticks (genus Ixodes).


Why does the water seem to mix quickly in some cases while other times water mixes slow

Answers

Answer:

It depends what direction the heat is heading.

Explanation:

Because heat moves upwards, it takes a longer time for heat to move downwards toward a substance below the hotter factor.

Final answer:

The rate at which water mixes is influenced by factors such as temperature differences, viscosity, and the type of mixtures involved. Thermal energy transfers drive mixing in cases with significant temperature difference. Viscosity and chemical behaviors of substances also impact the mixing process.

Explanation:

The rate at which water mixes can vary due to several factors such as temperature difference, viscosity, and the nature of the mixtures involved. In the case of temperature difference, when two bodies of water with different temperatures mix, the energy transfers from the hotter mass to the colder one, ultimately leading to a uniform temperature. This process is driven by an increase in entropy. So, if the temperature difference is vast, the mixing might appear to happen more quickly.

Viscosity is another factor to consider. It describes the resistance of a fluid to flow. Fluids with higher viscosity (like syrup) flow slower compared to those with low viscosity (like water), thus affecting the mixing rate.

Lastly, the type of mixtures involved also influences the rate at which water mixes. In a simpler mixture, like mixing water with more water, the process is genuinely quicker. However, if water is mixed with a complex mixture (like substances in a swimming pool), it requires more time for complete homogeneity due to the different substances' chemical behaviors.

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A fish feeds on algae in a pond. As a result, there is an energy transfer between trophic levels in the ecosystem.

What is the name of the cellular process that releases energy from the algae so it can be used by the fish?

A. photosynthesis
B. homeostasis
C. thermoregulation
D. cellular respiration

Answers

Answer: D. cellular respiration

Explanation:

Cellular respiration is a process which involves the break down of glucose molecules into water and carbon dioxide present in the food so as to release energy in the body in the form of ATP and also releases wastes.

The fish being a consumer in the food chain will eat algae as a food source. The cellular respiration process in fish will break down the glucose molecules in the algal food and will provide energy to the fish.

Answer:

C. Cellular respiration

Explanation:

 
Hydrogen bonds can form between regions of polar molecules that are
a)
nonpolar.
c)
negatively charged.
b)
uncharged (neutral).
d)
oppositely charged.

Answers

The answer to your question is,

D) Oppositely charged.

-Mabel <3

Hydrogen bonds can form between regions of polar molecules that are oppositely charged.

For a hydrogen bonds to form, a molecule that has hydrogen attached to an atom of high electronegativity and another molecule that has another electronegative atom with high electronic density (that is, a negative partial charge) is required.

When both molecules are brought together by hydrogen, a weak bond called a hydrogen bridge is generated.

A molecule is a dipole when there is an asymmetric distribution of electrons because the molecule is made up of atoms of different electronegativity.

As a consequence, the electrons are preferably in the vicinity of the most electronegative atom.

This creates two regions (or poles) in the molecule, one with a negative partial charge and the other with a positive partial charge

The bonds will be the more polar the greater the difference in electronegativity between the bonded atoms.

Therefore, we can conclude the hydrogen bonds can form between regions of polar molecules that are oppositely charged, having opposite charges, these two parts of the atom attract each other.

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Because it contains just a small amount of distortion over a local area, a _____ projection map is used to make road and weather maps.

Answers

the answer is a conic hope this helps

Because it contains just a small amount of distortion over a local area, a conic  projection map is used to make road and weather maps.

Definition of Conic by Mimiwhatsup: method of projecting maps of parts of the earth's spherical surface.

Order the steps in the process of fertilization

Answers

Answer:

The correct steps in the process of fertilization are as follows:

-The ovary releases an egg

-A sperm enters the egg,

-The fertilized egg travels out of the fallopian tube ,

-The fertilized egg attaches to the lining of uterus.

Explanation:

Fertilization is the process of formation of zygote by the fusion of female gamete (egg) and male gamete (sperm).

Each month an egg is released by an ovary. During copulation, the sperm enters and fuses with an egg. The site of fertilization is fallopian tube. The fertilized egg moves out of the fallopian tube for implantation. The implantation of fertilized occurs in the uterus, during which fertilized egg attaches to the lining of uterus.

The process of fertilization in correct order is: The ovary releases an egg[tex]\rightarrow[/tex] [tex]\rightarrow[/tex] A sperm enters the egg [tex]\rightarrow[/tex] The fertilized egg travels out of the fallopian tube[tex]\rightarrow[/tex] The fertilized egg attaches to the lining of the uterus.

Fertilization is the process by which a sperm cell and an egg cell combine to form a single cell called a zygote. This process is necessary for sexual reproduction to occur in many organisms, including humans.

During fertilization, a sperm cell must first travel through the female reproductive tract to reach the egg cell. The egg cell is released from the ovary and travels down the fallopian tube, where it may be fertilized by a sperm cell. If a sperm cell successfully penetrates the egg cell, the two cells merge to form a single cell called a zygote. The zygote then begins to divide and grow as it travels down the fallopian tube towards the uterus.Once the fertilized egg reaches the uterus, it must attach to the lining of the uterus in order to continue developing.

Therefore, the correct order for the process of fertilization is:

1. The ovary releases an egg

4. A sperm enters the egg

3. The fertilized egg travels out of the fallopian tube

2. The fertilized egg attaches to the lining of the uterus.

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Find the mean of the set data. -17 32 -9 0 52 12 -14?? A fact is true and can be proven while a(n) _______ is someones belief or idea evaluate 15k when k=3 A speed reader can read 850 efficient words per minute. An average reader can read at approximately 1/7 that speed. How many efficient words per minute does an average reader read? Trumans Executive Order 9981 affected the military by Juan bought a desktop computer and a laptop computer. Before finance charges, the laptop costs $300 more than the desktop. He paid for the computers using two different financing plans. For the desktop the interest rate was 6% per year, and for the laptop it was 7% per year. The total finance charges for one year were $398. How much did each computer cost before finance charges? what are the good and bad acts that industrialists did Best estimate for 61/7 any information that comes from another source is considered their intellectual property True or false Which statement correctly describes the differences between positive and negative acceleration?Positive acceleration describes a change in speed; negative acceleration describes no change in speed.Positive acceleration describes no change in speed; negative acceleration describes a change in speed.Positive acceleration describes an increase in speed; negative acceleration describes a decrease in speed.Positive acceleration describes a decrease in speed; negative acceleration describes an increase in speed. In training for a swim meet, Logan swam 750 meters in 1/3 of an hour. His swimming partner Mila, swam 2/3 of Logan's distance in 1/4 of an hour. What is Logan's average swimming speed? define density and erute the formula and units for calculating density One example of a chemical change is filtering a mixture, burning wood, boiling water, or crushing a can? There are four basic forces in nature: gravity, the electromagnetic force, the strong nuclear force, and the weak nuclear force. Of the four basic forces which acts over the shortest distance?A gravityB electromagnet forceC strong nuclear force D weak nuclear force What group of people mostly live in North Africa during his first year as a pilot, rob flies 6,692 miles. he flies 16,429 miles the second year and 24,211 miles the third year. he wants to estimate how many more miles he flew in the third year than the first and second year combined. which shows one way rob could estimate? Sir Isaac Newton determined that gravity has a fixed acceleration on Earth. The earth pulls objects towards it with a fixed acceleration at -9.8 m/s2. This is a _____________ ____________, as it states a scientifically accepted fact about the natural world. A)scientific law B)scientific theory C)natural hypothesis D)scientific evaluation if the mean of a symmetrical distribution is 56, which of the values could be the median of the distribution 56,14,28,42 Record the product 51 times 77 A nursery has $40,000 of inventory in dogwood trees and red maple trees. the profit on a dogwood tree is 27% and the profit on a red maple tree is 19%. the profit for the entire stock is 20%. how much was invested in each type of tree?