Final answer:
Paleontologists Stephen Jay Gould and Niles Eldredge proposed the theory of punctuated equilibria, which describes the pattern of evolution as long periods of stability interrupted by brief periods of rapid change, explaining the fossil record's structure and the relative stability of species over time.
Explanation:
Gould and Eldredge proposed a new evolutionary theory known as punctuated equilibria. This theory suggests that instead of species evolving continuously over time, they remain stable for long periods, known as equilibrium, and undergo rapid evolution during relatively brief periods of ecological instability, leading to new species. These evolutionary bursts punctuate the long periods of stasis. Punctuated equilibria helps explain the patterns observed in the fossil record, including the presence of small anatomical gaps between closely related fossil forms. The theory underscores the stability of species over time, with adaptation occurring primarily during the formation of a new species, rather than as a constant process. While it incorporates genetic principles, punctuated equilibria is primarily a theory of macroevolution, focusing on the transitions between species in geological time.
Sort the following taxonomic levels in order from largest to smallest. Largest being 1st, smallest being 7th.
Thermal pollution affects only fish. Please select the best answer from the choices provided T F
Help please
Can u define it on your own words please
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WILL MARK BRAINLIEST
The characteristics of two layers of Earth’s crust are listed. Layer A: Consists of the lithosphere Layer B: All living things live on this layer Which statement is true?
Layer A is the crust and Layer B is the mantle.
Layer A is the mantle and Layer B is the crust.
Layer A is the outer core and Layer B is the inner core.
Layer A is the inner core and Layer B is the outer core.
Answer:
Option B
Explanation:
The upper mantle along with the some portion of crust together makes the lithosphere.
Lithosphere is bounded by the atmosphere and primarily consists of rock and plates. There are two types of oceanic lithosphere – a) Oceanic Lithosphere and b) Continental Lithosphere
The living organism live on the top most layer of earth i.e the crust which consist of geographical land forms and soil
Hence, option B is correct
How long does it take for the moon to rotate and revolve?
you are looking through a microscope at some cells.each of the cells have a different structure. what can you infer about the cells
When viewing cells through a microscope and noticing that each cell has a different structure, it can be inferred that these cells have different functions or come from different types of organisms or tissues. The variation in cell structure is typically linked to the specific roles each cell performs, as a cell's structure is tailored to its function in accordance to the principle known as 'form follows function' in biology.
Cells are the basic structural and functional units of life, and their structures are intimately linked with their functions. The concept of 'form follows function' suggests that the structure of a biological entity will be shaped by the particular functions it performs. If the cells observed are structurally distinct, it implies that they were designed to carry out different tasks or come from various environments. For example, a neuron in the nervous system has a very different structure compared to a red blood cell, reflecting their unique roles in the body. Similarly, plant cells differ from animal cells in key structural components like cell walls and chloroplasts, which are related to their functions in photosynthesis and maintaining rigidity. Noticing different structures under the microscope implies that there is a diversity of cell types and possibly a range of biological functions being observed.
Which of the following is a way that marine ecosystems can be affected by climate warming trends
Answer:
C. decreased levels of carbonate
Explanation:
Edge
What would happen to the body if the body temperature continued to decrease during the tenth hour instead of leveling off
In your own words, explain what the summary equation tells you about cellular respiration.
The summary equation for cellular respiration represents the conversion of glucose and oxygen into carbon dioxide, water, and ATP, the opposite process of photosynthesis. It indicates how cells extract energy from food and helps maintain stable atmospheric levels of oxygen and carbon dioxide.
Explanation:The summary equation for cellular respiration provides a concise description of the process by which cells convert glucose and oxygen into carbon dioxide, water, and chemical energy in the form of ATP (adenosine triphosphate). Specifically, the equation C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP represents the transformation of the energy contained in the bonds of glucose molecules into a form usable by cells for biological functions. This process is vital for the maintenance of life and is the mirror opposite of photosynthesis, where plants produce glucose and oxygen from carbon dioxide and water using energy from sunlight.
The exchange of carbon dioxide and oxygen through cellular respiration and photosynthesis worldwide helps to keep atmospheric oxygen and carbon dioxide at stable levels. Cellular respiration occurs in three stages: glycolysis, the Krebs cycle (also known as the citric acid cycle), and the electron transport chain. Each stage involves a series of biochemical reactions that progressively capture energy from glucose and transfer it into the high-energy phosphate bonds of ATP.
The picture shows an experiment used to determine the effect of using more nails in the core of an electromagnet. Which of the following would make this a better designed experiment?
A. Using a different number of batteries for each electromagnet.
B. Using the same number of turns of wire for each electromagnet.
C. Inserting an ammeter in each circuit between the battery and the nails.
D. Using a different size battery for each electromagnet.
an offspring cannot have a trait if neither of its parents has it. Agree or disagree?
Eli wants to reduce his impact on the environment. Which activity should Eli do to help the environment and his community?
The correct activity for Eli to undertake to help the environment and his community is to participate in local recycling programs.
By participating in local recycling programs, Eli can contribute to reducing waste in his community. Recycling helps to conserve natural resources, saves energy, and reduces pollution, which are all beneficial to the environment.
Additionally, by engaging in recycling, Eli can set a positive example for others in his community, potentially encouraging more people to recycle and thus amplifying the positive impact on the environment.
Other activities such as reducing energy consumption at home, using public transportation, and supporting local environmental groups are also beneficial, but recycling is a direct way to reduce waste and can be done by almost everyone in the community.
Marge is an ace at tennis. She does not miss a ball! She has great balance and coordination. The part of Marge’s brain that helps with her tennis game is the _______
The Answer is the Pre-Frontal Cortex.
Hope this Helps!
Answer:
The answer is B cerebellum
Explanation:
Kingdom animalia includes a major phylum known as chordata, which includes the sub-phylum vertebrata. This includes lions like the ones shown above. The remaining taxonomic levels for lions is: Mammalia, Carnivora, Felidae, Panthera, leo. For the lion, Felidae is the name given to which taxonomic level?
Answer:
The correct answer is- Family
Explanation:
All the organisms are classified into seven different taxonomic groups and these groups are kingdom, phylum, class, order, family, genus, species. The highest largest taxonomic level is the kingdom and the lowest and smallest is species.
Leo is the species, Panthera is the genus and Felidae is a family of lion. The order of lion is Carnivora, class is Mammalia, phylum is Chordata and kingdom is Animalia. Therefore Felidae is the family of lion at taxonomic level.
The human population has exceeded 7.06 billion with the developing countries accounting for 97% of the growth. What factor does not account for population growth in these countries ? A.) High fertility rates B.) Lower levels of education C.) Limited use of family planning D.) Improving economic opportunities
Answer is D.
There are many reasons for the rapid population growth rate in most developing countries is higher than in developed countries. Some of the major ones are: Women are least educated and they don't have easy access to birth control measures. Developing countries depend on agriculture and other farming activities. Children can be put to work at a young age to do these jobs. So, to improve economic condition of their families. Therefore, high fertility rate may not account to high population growth rate in most developing countries.
Mitochondrial DNA accumulates DNA mutations quickly. Because of this, it would be most beneficial in analyzing the ancestral relationship of organisms that are
A. Mitochondrial DNA is beneficial in both of these cases
B. Distantly related
C. Mitochondrial DNA is not used to analyze relationships
D. Closely related
Answer:
Mitochondrial DNA accumulates DNA mutations quickly. Because of this, it would be most beneficial in analyzing the ancestral relationship of organisms that are
A. Mitochondrial DNA is beneficial in both of these cases
B. Distantly related
C. Mitochondrial DNA is not used to analyze relationships
D. Closely related
Explanation:
Mitochondrial DNA does not serve to identify individuals without ambiguity, but to detect kinships between groups of individuals; it is then used for comparisons between missing persons and unidentified remains and their relatives.
The answer is: D. closely related.
explain why the light and dark colored squirrels might be selected for and the medium colored squirrels selected against
Which statement is true about pandemics and endemics?
A) a pandemic can escalate into an epidemic.
B) an epidemic can escalate into a pandemic.
C) a pandemic is localized in one area while an epidemic is spread across countries.
D) a pandemic only involves infectious diseases while an epidemic only involves noninfectious diseases.
Pandemic is the condition that occurs due to escalation of epidemic. The correct option is B.
What is a epidemic?A disease that impacts a vast group of people in a community, demography, or region is referred to as an epidemic.
On the other hand, pandemic refers to an epidemic that has spread across multiple countries or continents.
Thus, the correct option is B.
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Over the decades local and global ice ages have lowered sea levels. As a result, there is often a decline in marine diversity due to
Over the decades local and global ice ages have lowered sea levels. As a result, there is often a decline in marine diversity due to - factors like salinity and temperature of water.
Salinity is the measure of the amount of salt present in any ocean or sea water. High salinity makes it impossible for marine life to survive. Similarly, the temperature of water should be maintained according to every organism's need. Like- Deep sea has a low temperature as compared to shallow sea, due to sunlight. So, deep sea creatures cannot survive in shallow water temperature and shallow water creatures cannot survive in deep sea.
I need help with punnet squares
Answer:
a punnett square shows the probability that the parents off spring will have a certain phenotype be cross the parents two genotypes
further Explanation:
so a punnett square take two parents and crosses them to calculate the chance you will get a certain phenotype by drawing a square and splitting it into four quarter you take the dads two genotypes and put them on the top of the square and you put the moms on the side now that you have the parents genotypes labeled you cross them the letters are there alleles so if you have a upper case allele then it is dominant meaning the offspring get the dominant trait (phenotype) now if you have two lower case letters then the offspring get the non-dominant trait (phenotype) so Bb is gets a dominant trait BB is a dominant trait but bb is a non dominant trait the way you cross them is say you have BBxbb here's what the chart will look like
B B
b Bb Bb
b Bb Bb
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Genetic mutations can cause many different diseases and disorders. Which of the following diseases is caused by a genetic mutation?
A. AIDS
B.Cystic fibrosis
C.Type 1 Diabetes
D.rheumatoid arthritis
Please help. I'm going to fail omg.
Directions: Use the information given to you below for each trait to answer the problems that follow. Trait
Dominant Form Recessive Form Letter to Use Hair Color Brown Blond B or b Eye Color Brown Blue E or e Dimples Dimples No Dimples D or d Widow’s Peak Widow’s Peak Not Present W or w Freckles Freckles No Freckles F or f Handedness Right Handed Left Handed H or h
1. What is the genotype of a female who is heterozygous for eye color? _______________________
2. What is the genotype of a female who is homozygous dominant for dimples? _________________
3. What is the genotype of a male who is homozygous recessive for hair color? ___________________
4. What is the genotype of a male who is heterozygous for the widow’s peak? _________________
5. What is the genotype of a female who is homozygous recessive for eye color? __________________
6. What is the genotype of a male who is heterozygous for dimples? __________________________
7. What is the genotype of a female who is homozygous dominant for handedness? _________________
8. What is the genotype of a male who is homozygous recessive for handedness? __________________
9. What is the genotype of a male who is heterozygous for freckles? __________________________
10. What is the genotype of a female who is homozygous dominant for hair color? _________________
11. If a person has the genotype DD, they are considered to be? __________________________
12. If a person has the genotype hh, they are considered to be? ____________________
13. If a person has the genotype Ww, they are considered to be? ______________________________
14. If a person has the genotype Bb, what trait are they heterozygous for? ________________________
15. If a person has the genotype FF, what trait are they homozygous for? ________________________ Purple flowers are dominant to white flowers: List the Phenotypes of the flowers: PP________________________ Pp________________________ pp________________________ Brown eyes are dominant to Blue Eyes: List the Phenotypes for the genotypes listed: BB________________________ Bb________________________ bb________________________ Round seeds are dominant to wrinkled seeds. List the Phenotypes for the genotypes listed: RR ________________________ Rr________________________ rr________________________ Bobtails in cats are recessive: List the Phenotypes of the cats: TT________________________ Tt________________________tt________________________
1. Ee
2. DD
3. bb
4. Ww
5. ee
6. Dd
7. HH
8. hh
9. Ff
10. BB
11. homo dominant
12. homo recessive
13. hetero
14. hair color
15. freckles
PP. purple homo dominant
Pp. purple hetero
pp. white homo recessive
BB. brown homo dominant
Bb. brown hetero
bb. blue homo recessive
RR. round seeds homo dominant
Rr. round seeds hetero
rr. wrinkled seeds homo recessive
TT. bobtails homo dominant
Tt. bobtails hetero
tt. no bobtail homo recessive
if your frog is an immature female, you will find 2 grayish or pinkish ovaries in either side of the abdominal cavity. The testes of the male are in the corresponding positions. Attached to these organs are yellow fat bodies. What is the function of fat bodies?
Answer: see explanation
Explanation: Fat bodies in frogs store energy and are attached to the ovaries in females and the testes in males. They provide a source of energy during periods of low food availability and support reproduction.
Final answer:
Fat bodies in frogs act as energy reserves for breeding activities and during metamorphosis. Frog eggs are protected by a gel-like substance meanwhile ovaries produce eggs and secrete hormones necessary for reproduction.
Explanation:
The fat bodies attached to the reproductive organs in frogs serve as energy reserves. These reserves are especially important during the breeding season when frogs require extra energy for reproductive activities such as egg-laying and mating. The fat bodies are rich in lipids and can be metabolized to meet the energy demands when food is scarce or not available during the breeding season. Also, during metamorphosis, when a tadpole transitions to an adult frog, these fat bodies provide the necessary energy for this energy-consuming process.
Frog eggs are surrounded by a gelatinous substance, often referred to as "jelly." This jelly provides protection to the eggs by insulating them against physical damage and predation, as well as maintaining a moist environment, which is crucial for the survival of the embryos. Frogs typically lay eggs in communal areas to increase the odds of fertilization, and apart from a few species that exhibit parental care, most amphibians do not tend to the eggs after laying them.
Ovaries in female frogs, as in other animals, are reproductive organs that produce eggs (ova) and secrete hormones such as estrogen. The ovaries are held in place by ligaments and consist of a medulla and cortex, with the cortex containing the eggs surrounded by follicular cells.
24 PLEASEEEE!! 43 points and Brainlyist answer
Answer:
1.Fossils
2.Location
Explanation:
Which structure do both nonvascular plants and seedless vascular plants have in common?
seeds
stems
spores
Spores are the structure which are present in both nonvascular plants and seedless vascular plants in common. Thus, the correct option is C.
What are vascular plants?Vascular plants are also called tracheophytes. These plants form a large group of land plants which have lignified tissues for the conduction of water and minerals throughout the plant and a specialized non-lignified tissue for the conduction of products of photosynthesis.
The seedless vascular plants contain vascular tissue but do not produce flowers or seeds. In seedless vascular plants, like ferns and horsetails, they reproduce through haploid, unicellular spores instead of seeds.
Non-vascular plants do not have any vascular tissues. Non-vascular plants do not possess roots, stems, or leaves which were present in the vascular plants.
Therefore, the correct option is C.
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During germination, peas sprout and grow. The data table shows the carbon dioxide produced during the germination period of peas under different conditions. Condition Rate of carbon dioxide produced (mL/min) Germinating peas, 10ºC 0.01 Germinating peas, 20ºC 0.02 What is the best conclusion?
Answer:
I believe the answer is C
Explanation:
Germinating peas at 20*C have a higher rate of cellular respiration than germinating peas at 10*C
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Ava makes a diagram that compares a confined aquifer with an unconfined aquifer.
Which statements would make the diagram correct?
X: contains the water table
Y: found between impermeable rock
X: contains the water table
Y: has water under pressure
X: found between impermeable rock
Y: contains the water table
X: has upper surface of water at atmospheric pressure
Y: has water under pressure
X: found between impermeable rock
Y: contains the water table
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in order to make the sanitizer the most effective it can be, it is acceptable to mix the sanitizer with
Effective sanitizers are created using 60% to 80% isopropanol or ethanol, with glycerin or ethylene to maintain skin softness.
To make sanitizer effective, it is common to use a combination of isopropanol or ethanol at a concentration of 60% to 80%, with the remainder typically being substances like ethylene or glycerin to keep the skin soft. These alcohols work by denaturing proteins and disrupting cell membranes, leading to cell lysis. For a tool to be effectively sanitized, it should be sprayed or dipped in the sanitizer and allowed to air dry without being wiped off with a sanitizing wipe.
Factors such as concentration, pH, temperature, and exposure time are crucial in determining the effectiveness of a sanitizer. Typically, alcohols are used in about a 70% aqueous solution as they require water to prevent the rapid coagulation of proteins, which could hinder the disinfectant's ability to penetrate cell membranes effectively. It is also important to select a disinfectant that is suitable for the contaminants present, cost-effective, non-toxic, and has a good shelf life.
Which of the following microorganisms is unable to reproduce outside of a host?
Bacteria
Fungus
Parasite
Virus
Answer:
The answer is going to be Virus.
Answer:
Viruss
Explanation:
What do the word solstice and equinox mean?How are they related to the position of earth axis?
Solstice and equinox refer to positions where the Earth's tilt relative to the Sun causes the longest and shortest days, or equal lengths of day and night, respectively, due to the 23.5° tilt of Earth's axis.
The terms solstice and equinox refer to specific positions in Earth's orbit around the Sun. A solstice is a point in the year when the Sun reaches its greatest distance north or south of the equator, leading to the longest or shortest day of the year. The summer solstice occurs around June 21, causing the longest day in the Northern Hemisphere, while the winter solstice occurs around December 22, resulting in the shortest day. Conversely, an equinox occurs when the tilt of Earth's axis is such that the Sun is directly above the equator, leading to equal lengths of day and night across the planet; these occur around March 21 (the vernal equinox) and September 22 (the autumnal equinox). These events are intimately related to the 23.5° tilt of Earth's axis of rotation. The cycle of the seasons is a direct result of this tilt, with the angle between Earth's axis and the Earth-Sun line varying throughout the year.