Answer:
Darwin's theory
Explanation:
Species change over time; some traits become more common, others
less. This process of change is driven by natural selection. The traits that become more common are the ones that are “adaptive” or “increase fitness”
(that is, a creature’s chances of living longer and producing more offspring).
Example: the long neck of giraffes.
What is the correct answer?
Answer:
First one
Explanation:
Only answer that makes sense.
What is most likely the cause of the differences in the birds in the picture?
interbreeding
change in diet
mutations in DNA
mutagens in the environment
Answer:
Mutations in DNA
Explanation:
Which of the following is a process that occurs only in the biosphere? condensation infiltration precipitation transpiration
Answer:
Transpiration
Explanation:
Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers. Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism.
Hope it helps!!!
Answer:
Transpiration
Explanation:
Explain how the carrying capacity of an ecosystem causes a population to decrease in size
Answer:
Explanation:
carrying capacity is how many of a certain organism an ecosystem can hold, limiting factors are things that can limit a population's growth. So for example say there's a forest and it has a low amount of food for deer. Food availability would be a limiting factor and it effects how many deer the forest can support.
The carrying capacity of an ecosystem is its maximum sustainable population size. When this limit is exceeded, resource competition can result in population decrease.
Explanation:The carrying capacity of an ecosystem is the maximum number of individuals of a particular species that the environment can support indefinitely, given the available resources like food, water, and space. When the population exceeds the carrying capacity, resources become scarce leading to competition.
As a result, some individuals may fail to survive or reproduce, thus causing the population to decrease in size.
For example, consider a herd of deer in a forest. If food and water supply becomes limited due to their growing numbers and overconsumption, some deer might not get enough food and may consequently die of starvation, thus reducing the population number.
This phenomenon embodies the concept of population dynamics, a key aspect in studying ecosystems and biodiversity.
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10 POINTS Which organisms belong to the Kingdom Protista?
Select the two correct answers.
amoeba
sea anemone
beetle
seaweed
Answer:
amooeba and seaweed
Explanation:
the other 2 are in different kingdoms
The organisms belong to the Kingdom Protista are Amoeba and seaweed. Option A and D are correct.
What is kingdom Protista?The organisms which are not considered as plants, animals, or fungi, but it is a simple eukaryotic organism. Protists can be found in moist, damp or terrestrial environment or even as a parasite. They can be found either in colonies or they are unicellular.
The Greek word “protistos”, means “the very first” is the term where ‘Protista’ is derived from. These are eukaryotic unicellular organisms consisting well bound nucleus and the cell organelles.
In some protists flagella or cilia are present for their locomotion. As they were the first eukaryotes they are considered as predecessor of animals, plants, and fungi. Some examples of protists include, Amoeba, Paramecium, Euglena and seaweed.
Therefore option Amoeba and seaweed are correct.
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Which is the largest sinus cavity?
A.
Frontal sinus
B.
Maxillary sinus
C.
Sphenoidal sinus
D.
Ethnoid sinus
The maxillary sinus, located in the maxillary bones under the eyes, is the largest sinus cavity in the human body. Sinuses assist in filtering, moistening, and warming the air we breathe.
Explanation:The largest sinus cavity in the human body is the maxillary sinus. It is one of the four pairs of paranasal sinuses that are situated within the skull and connected to the nasal cavity. The maxillary sinus is located in the maxillary bones, right below the eyes. Compared to the frontal, ethmoid, and sphenoid sinuses, the maxillary sinus is the largest. These sinuses are filled with air and lined with a mucus membrane that helps filter, moisten, and warm the air we breathe.
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Help me please!!!its difficult
Answer:
23 chromosomes
Explanation:
Butterflies don't have ~380 chromosomes, and they don't all have 20-40 chromosomes either! One thing you need to remember about counting chromosomes is that you can count them in 2 different ways to get 2 different numbers
Gametes contain half the chromosomes contained in normal diploid cells of the body, which are also known as somatic cells. Haploid gametes are produced during meiosis, which is a type of cell division that reduces the number of chromosomes in a parent diploid cell by half.
write this down. This would help u understand
An ecosystem is balanced when
a. energy does not enter or leave the ecosystem.
b. there are an equal number of plants and animals.
c. there is plenty of rain.
d. there are enough resources for every living thing.
(Plz help)
At which point on the graph displaying human population growth would factors like drought and fires likely have the greatest impact
in growth rate?
Between points A and B
Between points B and C
Between points C and D
Equally at any point on the graph
Points between B and C displaying human population growth would factors like drought and fires likely have the greatest impact in growth rate.
What do you mean by growth rate?The term “growth rate” describes the rate of change in the value of a specific metric across a given time period, expressed as a percentage. Common examples of scenarios where the growth rate is often used are the following: Company Sales. Population.
Moreover, growth rates are computed by dividing the difference between the ending and starting values for the period being analyzed and dividing that by the starting value.
Therefore, the growth rate of a value (GDP, turnover, wages, etc.) measures its change from one period to another (month, quarter, year). It is very generally expressed as a percentage.
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Color Blindness is a sex-linked, recessive trait. Which of the following describes the probability of Color Blindness in the offspring of a man who is not color blind and a woman who is a heterozygous carrier? To receive credit highlight the correct answer and complete the Punnett Square
The answer is in the image attached.
Hope this helps!
The probability of Color Blindness in the offspring of a man who is not color blind and a woman who is a heterozygous carrier is 50% for males and 0% for females.
What is a Punnett square?A Punnett square is a diagram used in genetics to describe gametic combinations in the offspring.
In this case, the chance for males is equal to the chance of transmitting this trait for the mother (50%).In this case, the chance for females is equal to 0% because the father is not affected.
In conclusion, the probability of Color Blindness in the offspring of a man who is not color blind and a woman who is a heterozygous carrier is 50% for males and 0% for females.
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need help by today labeling these.
Answer:
A: Vacuole
B: Mitochondria
C: Cell Membrane
D: Smooth ER
E: Rough ER
F: Cell Wall
Explanation:
Vacuole- near nucleus
Mitochondria- green oval looking thing
Cell Membrane- always before cell wall in a plant cell
Smooth ER- can be near rough ER ( no ribosomes)
Rough ER- always near nucleus
Cell Wall- large green thing surrounding cell membrane
Genes are sections of DNA that code for a particular trait. Genes are
•carbohydrates
•lipids
•proteins
•nucleic acids
Answer:
Nucleic acids
Explanation:
got 100% on test
Need help so please!!!
Answer:
60 percent because 30/50 have curly hair 30/50 is 60 percent.
Protozoans (animal-like) because they can gather food and ____
Answer:
Are able to move independently or partake in locomotion.
Explanation:
Identify structure A.
Identify structure B.
Identify structure C.
Identify structure D.
3209-03-07-20-02
Answer:1.a 2.b 3.c 4.d
Explanation:
i did it on e2020
Answer:
1.a 2.b 3.c 4.d trust me
Explanation:
An enzyme is a large ____ molecule.
A. Nucleic Acid
B. Protein
C. Carbohydrate
D. Polysaccharide
Answer:
B Protein molecule
Explanation:
Enzymes are protein molecules in cells and speed up chemical reactions in the body, but do not get used up in the process, therefore can be used over and over again
Answer:I believe it is B, Protein
Explanation:Im always correct
The above diagram shows human reproduction at the cellular level. What is the name of the process that occurs when the sperm cell and the egg cell unite?
Answer:
C
Explanation:
When the egg and sperm unite it is called fertilization
Answer: The answer is FERTILIZATION
Explanation:
:D
Complete the statements below.
When muscles contract, they become____
The muscles of the rear end, legs, and feet are called____ muscles.
______ muscles move food down the
digestive tract.
The correct completions for the statements are as follows: When muscles contract, they become shorter and thicker. The muscles of the rear end, legs, and feet are called skeletal muscles. Smooth muscles move food down the digestive tract.
1. When muscles contract, they exert force on the structures they are attached to, which typically results in the muscles becoming shorter and thicker. This is due to the sliding filament mechanism where the myosin heads pull on the actin filaments, causing the filaments to slide past each other and shorten the muscle fiber.
2. The muscles of the rear end, legs, and feet are classified as skeletal muscles. These muscles are striated, under voluntary control, and attached to the skeleton by tendons. They are responsible for movement and posture.
3. Smooth muscles are responsible for moving food down the digestive tract. These muscles are involuntary and are found within the walls of internal organs such as the stomach, intestines, and blood vessels. They are called smooth because they lack the striated appearance of skeletal and cardiac muscles. The coordinated contractions of smooth muscles, known as peristalsis, propel food through the digestive system.
What is the purpose of the Line of defense
Answer:
The three lines of defense model enhances the understanding of risk management and control by clarifying roles and duties. The model provides guidance for the implemented structure and the assigned roles and responsibilities of parties to increase the effective management of risk and control
Explanation:
the first line of defence – functions that own and manage risk. the second line of defence – functions that oversee or specialise in risk management, compliance. the third line of defence – functions that provide independent assurance, above all internal audit.
Answer:
las 3 lines of defense model shows the understanding of risk management and control by clarifying roles and duties. The model provides guidance for the implemented structure and the assigned roles and responsibilities of parties to increase the effective management of risk and control.
When water percolates it passes through which area, first?
Answer through the soil
Explanation:
When water percolates, it first passes through the unsaturated zone.
Percolation is the process by which water moves downward through the soil and rocks, typically from the surface, eventually reaching the groundwater. The unsaturated zone, also known as the zone of aeration, is the area beneath the land surface where the pore spaces in the soil or rock contain both air and water. This zone lies above the water table, which is the boundary between the unsaturated and saturated zones.
When water initially infiltrates the soil from the surface, it enters the unsaturated zone. Here, it fills the pore spaces by displacing the air, and the water continues to move downward due to gravity. As it moves, it may be held by capillary forces, taken up by plant roots, or evaporate back into the atmosphere. Only when the water reaches the saturated zone, where all the pore spaces are filled with water, does it become part of the groundwater system.
The sequence of water movement during percolation is as follows:
1. Water falls onto the ground surface.
2. It infiltrates the soil through the process of infiltration.
3. Water enters the unsaturated zone, where it moves downward through the soil and rock pores that contain both air and water.
4. As water percolates deeper, it eventually reaches the saturated zone below the water table, where all the pore spaces are filled with water.
5. Once in the saturated zone, water becomes part of the groundwater and continues to move slowly through the aquifer, which can eventually flow into streams, lakes, or oceans.
Understanding this process is crucial for managing water resources, as well as for addressing issues such as soil moisture for agriculture, groundwater recharge, and the potential for pollutants to enter and move through the subsurface environment.
Write a paragraph explaining how the atoms in sugar molecules can be used to form amino acids and other large carbon-based molecules.
Answer:
Sugar molecules contain carbon, hydrogen, and oxygen: Their hydrocarbon backbones are used to make amino acids and other carbon-based molecules that can be assembled into larger molecules (such as proteins or DNA), used for example to form new :
Answer:
the one above is correct but plagerized
Explanation:
Analyze: Was the increase in the average beak depth caused by an increase in
large-beaked finches or a decline in small-beaked finches? Explain your answer.
Answer:
No
Explanation:
Charles Darwin went to the Galapagos island and found four different types of finch, he found out that all there beaks where different which allowed them to adapt to their environment. their beaks are for different things.
Answer:
I believe the increase in the average beak depth was caused by both the increase in large-beaked finches and a decline in small-beaked finches, since due to the disappearance of the small-beaked finches, only the long-beaked finches will be taken into consideration, so the average depth of the beak will be greater. The finches with small beak depth will not be counted.
Explanation:
Describe how
dehydration, ADH and thirst play a role in the feedback mechanism that controls water balance in the
human body.
Answer: Ok so this may be a little off but ill do my best
Explanation:
On a typical day, the average adult will take in about 2500 mL (almost 3 quarts) of aqueous fluids. Although most of the intake comes through the digestive tract, about 230 mL (8 ounces) per day is generated metabolically, in the last steps of aerobic respiration. Additionally, each day about the same volume (2500 mL) of water leaves the body by different routes; most of this lost water is removed as urine. The kidneys also can adjust blood volume though mechanisms that draw water out of the filtrate and urine. The kidneys can regulate water levels in the body; they conserve water if you are dehydrated, and they can make urine more dilute to expel excess water if necessary. Water is lost through the skin through evaporation from the skin surface without overt sweating and from air expelled from the lungs. This type of water loss is called insensible water loss because a person is usually unaware of it.ADH is a hormone in your body that helps your kidneys manage the amount of water in your body. Dehydration means you need water and when your thirsty your body wants water. So when your thirsty, your brain is letting you know you need water, and if you don't drink water you will become dehydrated and that can lead to kidney failure.
Your kidneys have a very important role of water management.
I really hope this helps :)
Scientists found evidence of a time period 3 billion years ago when Lee's energy entered the Earth system than exited. What is one change to the atmosphere that could have caused this, how did it change the amount of energy in the Earth system?
A) methane increased, leading two more energy in the earth system and more energy absorbed by Earth's surface.
B) methane increased, leading to less energy in the earth system and less energy absorbed by Earth's surface.
C) methane decreased, leading to more energy in the earth system and more energy absorbed by Earth's surface.
D) methane decreased, leading to less energy in the earth system and less energy absorbed by Earth's surface.
PLEASE HELP ASAP!!
Answer:
i think its a
Explanation:
The correct answer is A: methane increased, leading to more energy in the earth system and more energy absorbed by Earth's surface. This is due to methane's effectiveness as a greenhouse gas that traps heat in the Earth's atmosphere.
The question deals with the effects of methane on the Earth's energy balance, specifically during a time period 3 billion years ago when less energy entered the Earth system than exited. As it pertains to the greenhouse effect, when the concentration of methane in the atmosphere increases, it leads to more energy being trapped within the Earth system. Methane is a potent greenhouse gas that absorbs and emits infrared radiation much more efficiently than carbon dioxide, contributing to an increase in the Earth's surface temperature because it traps more heat in the atmosphere.
Given this understanding, the correct option is A which states that an increase in methane leads to more energy in the earth system and more energy absorbed by Earth's surface. This is consistent with the function of greenhouse gases, notably their role in allowing sunlight to enter but impeding the escape of infrared radiation back into space, resulting in warming.
How are atoms in molecules being rearranged into different molecules during photosynthesis?
Answer:
Photosynthesis demonstrates the law of conservation of matter which states that atoms cannot be created nor destroyed; the atoms can only be rearranged into new molecules and ions. Photosynthesis is aided by enzymes, special proteins, which can either break chemical bonds or form bonds in molecules
F = freckles f= no freckles
3. A man who is heterozygous for freckles marries a woman who is also heterozygous for freckles.
a. What are the two genotypes? _________________
b. % of offspring that will be homozygous dominant ___________
c. % of offspring that will be heterozygous ___________
d. % of offspring that will be homozygous recessive ___________
e. % of offspring that will have freckles ___________
f. % of offspring that will not have freckles__________
A. Ff for both
B. 75%
C. 25%
D.0%
E.75%
F. 25%
Hope this helps you:)
Answer:
a. Ff for both
b. 25%
c. 50%
d. 25%
e. 75%
f. 25%
since both are heterozygous, when you genetically cross them, the probability of getting homozygous dominant is 1/4(25%), heterozygous will be 50%, homozygous recessive is 25%, 75% will have freckles since F is the dominant for freckles. 25% will have no freckles.
How would you judge the value of the relationship between humans and bacteria? (11 points)
Answer:
The human body is a complex ecosystem where microbes compete, ... Our methods generally determine these relationships in the human microbiome to ... values indicate that the microbial association network is structured to ...
what are producer consumer decomposer
Answer:
Producers are Autotrophs that make their own food Consumer is the ones that eats other organisms that makes them heterotrophs and decomposers break down the dead organisms
Explanation:
1. Which of the following Punnett Squares shows the correct offspring for a heterozygous mother and a homozygous recessive father?
A. 1
B. 2
C. 3
Punnet square showing heterozygous mother is Rr and homozygous recessive father as rr. The correct square is 2nd one.
What is homozygous and heterozygous ?A homozygous is defined as the allele containing both the same type of genes whereas the heterozygous allele has different types of gene.
A heterozygous mother Rr when mates with the homozygous recessive father that is rr. when Rr segregates into R and r and the rr segregates into r and r the two are recessive homozygous and two rest are called as recombinant ones. The percentage for both of the genotypes is 50 and 50. The phenotype is recombinant with the dominant phenotype and the recessive phenotype as rr.
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1. The formula for calculating the surface area of a cube is:
SA = length × width × number of sides (6)
Therefore, the surface area of a cube that is 1 cm on a side is 1 cm × 1 cm × 6 sides = 6 cm2
2. The formula for calculating the volume of a cube is:
V = length × width × height
Therefore, the volume of a cube that is 1 cm on each side is 1 cm × 1 cm × 1 cm = 1 cm3
3. The surface area to volume ratio is:
SA ÷ V
For a cube that is 1 cm on a side, SA/V ratio is 6 ÷ 1 = 6.
Calculate the SA/V ratio for a cube that is 3 cm on each side.
Calculate the SA/V ratio for a cube that is 3 cm on each side.
1.5
2
3
6
Answer:
2 (second option)Explanation:
The question aks to calculate the SA/V ratio for a cube that is 3 cm on each side.
1. Calculate SA
The surface area of a cube, SA, is 6 times the area of a face.
The area of a face is length × width.
Then:
SA = length × width × 6SA = 3cm × 3cm × 6 = 54cm²2. Calculate V
The volume, V, of a cube is:
V = length × width × heightThen:
V = 3 cm × 3cm × 3cm = 27cm³
3. Calculate the SA/V ratio
Divide SA by V:
SA/V = 54cm² / 27cm³ = 2 cm²/cm³
That is the second option: 2 ← answer
Final answer:
The surface area to volume ratio of a cube with a side length of 3 cm is calculated by dividing the surface area of the cube (54 cm²) by its volume (27 cm³), resulting in a ratio of 2.
Explanation:
To calculate the surface area (SA) to volume (V) ratio of a cube with a side length of 3 cm, we first determine the surface area and the volume of the cube. The formula for surface area of a cube is SA = 6s² where s is the side length of the cube. For a cube with side length of 3 cm, the surface area would be SA = 6 × 3² = 6 × 9 = 54 cm².
The formula for the volume of a cube is V = s³. So, the volume of a cube with a side length of 3 cm would be V = 3³ = 3 × 3 × 3 = 27 cm³. Now that we have both the surface area and the volume, we can calculate the SA/V ratio.
The surface area to volume ratio (SA:V) is expressed as SA ÷ V. So, for our cube that is 3 cm on each side, the ratio is 54 cm² ÷ 27 cm³ = 2. This means that for a cube with a side of 3 cm, the SA/V ratio is 2.