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Process or mechanism by which evolution occurs.

A. Evolution

B. Natural Selection

C. Mutation

D. Adaptation

Answers

Answer 1
B. Natural selection

Natural selection is the most important force of evolution. Other forces of evolution are mutation, gene flow and genetic drift.

Related Questions

PLEASE HELP



" Your alien friend from planet Xenon is visiting and wants to learn how to breed pea plants. You show your friend a recent batch of pea plants with purple flowers that you grew by crossing plants that had purple flowers with plants that had white flowers. Your alien friend is still confused as to why all your plants have purple flowers. How would you explain the most, simplest way possible, what happened?



Enter your answer in the space provided. "

Answers

Answer:

well you mixed two different types or colors of flowers

Explanation:

Physical description of a cell membrane?

Answers

Answer:

Cell membrane

Explanation:

A cell membrane is basically a protection of the cells. It controll what goes in and out of the cell and separates the interior of the cell from the outside environment. they contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, etc that mediate cellular  activities to pass between organelles.

What's the answer please??????????!!!!!

Answers

Answer: A homologous

Explanation: I’m 100% sure

BRAINLIST?

Name 4 systems that perform the process nutrient absorption

Answers

Answer:

The digestive system does that know just search up what is in the digestive system in gogle

Explanation:

Are the eyelid muscles voluntary or involuntary?

Answers

Answer ⇒ Involuntary muscles.

beak shape, camouflage, and webbed feet are all examples of which type of adaptation​

Answers

Answer:

beak shape: used to help an animal eat food like tearing apart food or either cracking nuts.

Camouflage: the color or shape of an animals body helps it blend into its envierment.

weebbed feet: help animal's propel themselves through the water with ease. This can help the animal swim faster to

catch prey or escape a predator. Also, if an animal has to swim long distances,

webbed feet can help it save energy so it can swim farther.

Explanation:

Hope this helps

Can anyone help me with these please

Answers

Answer:

6. Current = 8.33 Amps

7. Energy = 1200 Joules

Explanation:

Given the following data;

6. Power = 1000 Watts

Voltage = 120 Volts

To find the current flowing through;

Power = current * voltage

1000 = current * 120

Current = 1000/120

Current = 8.33 Amps

7. Power = 900 Watts

Time = 45 minutes to hours = 45/60 = 0.75 hours

To find the energy consumption;

Energy = power/time

Energy = 900/0.75

Energy = 1200 Joules

Bacteria are capable of
reproducing quickly. Explain how
this adaptation is beneficial in
their ability to become resistant
to antibiotics

Answers

Answer:

Antibiotics, also known as antimicrobial drugs, are drugs that fight infections caused by bacteria. Alexander Fleming discovered the first antibiotic, penicillin, in 1927. After the first use of antibiotics in the 1940s, they transformed medical care and dramatically reduced illness and death from infectious diseases.

The term "antibiotic" originally referred to a natural compound produced by a fungus or another microorganism that kills bacteria which cause disease in humans or animals. Some antibiotics may be synthetic compounds (not produced by microorganisms) that can also kill or inhibit the growth of microbes. Technically, the term "antimicrobial agent" refers to both natural and synthetic compounds; however, many people use the word "antibiotic" to refer to both. Although antibiotics have many beneficial effects, their use has contributed to the problem of antibiotic resistance.

Antibiotic resistance is the ability of bacteria or other microbes to resist the effects of an antibiotic. Antibiotic resistance occurs when bacteria change in some way that reduces or eliminates the effectiveness of drugs, chemicals, or other agents designed to cure or prevent infections. The bacteria survive and continue to multiply causing more harm.


Which model represents a possible chemical reaction

Answers

Answer: A I think

Explanation: I'am really sorry if i'am wrong

7. Cells will generally divide when? *

Answers

Answer:

cells will generally divide when reproduction occurs

hope this helps you ☺️☺️

THE CHOICES ARE IN THE PIC PLEASE HELP

when does the process of sublimation occur

Answers

Answer:

c

Explanation:

because the solid ice will sublime into gas

Study the processes that makes cells work

Answers

Answer:

One cell divides into two in a process called mitosis. Mitosis produces two genetically identical “daughter” cells from a single parent cell. Another type of cell division, meiosis, creates four daughter cells that are genetically distinct from one another and from the original parent cell. Only a few special cells can perform meiosis: those that will become eggs in females and sperm in males

Explanation:

The __________ system consists of the brain, spinal cord and nerves.
A. nervous

B. circulatory

C. digestive

Answers

Answer:

A. Nervous

Explanation:

cmon man is this even a question??

make a list of all addie's symtoms​

Answers

Addie Rerecich was only 11 years old when she was hospitalized with MRSA, an infection her doctor said she likely caught by picking at a scab — like so many kids do. While in the hospital, she contracted an untreatable form of the bacteria stenotrophomonas that nearly took her life. just give the girl above me brailyest

Yeast is added to bread dough before baking. After several minutes, the bread dough rises. Use your experiment to explain how respiration of yeast is important for the baking process.

Answers

Answer:

The purpose of any leavener is to produce the gas that makes bread rise. Yeast does this by feeding on the sugars in flour, and expelling carbon dioxide in the process.

While there are about 160 known species of yeast, Saccharomyces cerevisiae, commonly known as baker's yeast, is the one most often used in the kitchen. Yeast is tiny: Just one gram holds about 25 billion cells. That amount of fungi can churn out a significant amount of carbon dioxide, provided it has the simple sugars it uses as food. Fortunately, yeast can use its own enzymes to break down more complex sugars—like the granulated sugar in the activity below—into a form that it can consume.

Make a yeast-air balloon to get a better idea of what yeast can do

Yeast is a unicellular fungus which undergoes anaerobic respiration to produce ethanol and carbon dioxide gas.

How does yeast fermentation work in bread-making?In a process known as fermentation, yeast consumes the sugar present in the dough to produce carbon dioxide and alcohol.The dough is kept in a warm area throughout the baking process.Fermentation occurs as a result of heat.However, if the temperature is too high, the yeast is killed during the cooking process.As the dough ferments, carbon dioxide is created and trapped as microscopic air bubbles. The expansion of carbon dioxide during baking allows the bread to rise higher. During the bread-baking process, the alcohol created during fermentation evaporates.

This is how yeast fermentation plays a vital role in the baking process.

Learn more about yeast fermentation here:

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Grass
Tree
Figure 34
Which of the following is a food chain in the food web shown in Figure 3-4?
A)
tree, rabbit, hawk, snake
B)
grass, grasshopper, frog, snake
grass, caterpillar, robin, hawk
D)
tree, deer, mountain lion, fox

Answers

Ok I don’t think I will know what to do with the

HELP Which of the following is a correctly described example of negative feedback?


A thermostat controls the temperature at random times of the day by producing heat every 2 hours regardless of how warm the room is.


B thermostat turns on and off throughout the day to keep the temperature approximately the same or at a set point.


C thermostat steadily increases the temperature throughout the day.

Answers

Answer:

B

Explanation:

What are three similarities between biotic and abiotic factors?

i will give brainiest if you help me out !!!

Answers

Answer:

Both can occur in the same environment. Both can affect the same animals. Both depend on the environment.

2. List five things that are found in terrestrial ecosystems.​

Answers

Answer:

Explanation:

tundra,

taigas,

temperate deciduous forests,

tropical rainforests,

grasslands, and deserts.

Hope this helped!!!

tundra, taiga, temperate deciduous forest, tropical rain forest, grassland, deserts. Hope this helps! Mark brainliest please!

how magnification and resolution affect the appearance of objects viewed under a microscope​

Answers

Answer:

It allows to see objects more clearly.

Explanation:

Magnification and resolution greatly affects the appearance of objects that can be seen under a microscope​ because these two things make the specimen enlarge in size. Magnification refer to the process of enlarging the apparent size of something to see and observe it clearly while on the other hand, resolution is used to see more details about specimen that can be study in the microscope so we can conclude that both magnification and resolution has a great impact on the appearance of objects.

otions are in the second question please help asap any links will be reported

Answers

Answer:

Trees, crickets, bacteria, and deer are biotic. The rest are abiotic.

Explanation:

Biotic factors are living organisms, while abiotic factors are non living. Hope it helps :)

Why is the structure of a
nucleosome so important?

Answers

Answer:

In eukaryotes, nucleosomes play major roles in chromatin organization and gene expression  

Explanation:

In eukaryotic organisms, chromosomal DNA is packaged with the help of proteins called 'histones' to form chromatin. The nucleosomes represent the basic packing units of the chromatin. Each nucleosome is composed of a histone octamer containing each two histones H2A, H2B, H3 and H4 wrapped around by 147 bp of DNA. Nucleosomes act as scaffolds to form higher-order chromatin structures (i.e., 30-nm chromatin fibers and condensed chromosomes). Moreover, nucleosome histone proteins can be chemically modified at defined amino acid residues, and thus nucleosomes also provide an epigenetic layer of information that can promote or inhibit gene expression.

Please help <3 Will give brainliest

Answers

Answer:

A

Explanation:

PLSSSSS HELPPP CANT GET WRONG PLSSSSSSSS HELPPPP

Which of the following is NOT an example of natural selection?

A. Plants with thorns are less likely to be eaten by herbivores than other members of the same species that lack thorns.

B. Bacterial populations in hospitals develop resistance to drugs used to combat infection by them.

C. Scientists breed cows that give greater amounts of milk than their ancestors.

D. Fruit fly larvae with an enzyme to break down alcohol are better able to feed on fermenting fruit than those that lack the enzyme.

Answers

Answer:

The correct answer would be - C. Scientists breed cows that give greater amounts of milk than their ancestors

Explanation:

Natural selection is the process of adapting according to the new changes in condition and change accordingly to survive. So the individuals of organisms that are better and adapt faster to survive and reproduce better than others are the result of natural selection.

Plants developed thorns so they can be avoided by predators is the adaption and example of natural selection. Similarly, bacterial populations adapt and develop resistance to the drug. Fruit fly larva developed and adapt as well. Breeding cows for more amount of milk than ancestors by scientists is not natural selection.

If a dog starts to put its paw down on a sharp stone, the tough skin skin protects underlying structures from damage. Additionally, touch receptors in the skin send sensory signals to the spinal cord. The spinal cord then sends a signal to the muscles to lift the paw rather than continuing to press down. In this scenario, the dog may experience discomfort but avoid injury.

What two body systems are being used to protect the structures beneath the dog's skin and signal the muscles to lift the paw?
A.
integumentary and nervous systems
B.
circulatory and nervous systems
C.
circulatory and lymphatic systems
D.
integumentary and lymphatic systems



PLZZ HELP QUICKKK

Answers

the answer is A
i dont really know how to explain but this was a queen in my test and this was the right answer

The two body systems being used to protect the structures beneath the dog's skin and signal the muscles to lift the paw are the integumentary and nervous systems, which are in option A.

What is the organ system?

The dog's response to the sharp stone involves the coordinated action of two body systems: the integumentary system and the nervous system. The integumentary system consists of the skin and its associated structures, including hair, nails, and glands. The skin acts as a protective barrier between the external environment and the underlying tissues, and it has specialized structures, such as tough, keratinized layers in the paw pads, that can withstand pressure and protect the sensitive tissues underneath.

Hence, the two body systems being used to protect the structures beneath the dog's skin and signal the muscles to lift the paw are the integumentary and nervous systems, which are in option A.

Learn more about the organ system here.

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Which physical property is the rate at which
a substance transfers heat?
(F) boiling point
(G) density
(H) electrical conductivity
(I) thermal conductivity

Answers

I is answer. Don't open link. It is most likeky unsafe.

PLEASE HELP ASAP In the past, California has had many droughts. Which part of the water cycle is not active when a drought is occurring?

precipitation

condensation

transpiration

evaporation
?

Answers

precipitation ( rain ) is not occurring

i’ll mark brainliest


1. Define celular respiration

2.What types of organisms use cellular respiration?

3 In which cell organele does most of aerobic celular respiration occur?

4.What are the reactants of aerobic celular respiration?

5.What are the end-products of aerobic cellular respiration?

6. What is the chemical equation for aerobic cellular respiration? How does it relate to the
chemical equation for photosynthesis ?

7. What are the 3 stages of aerobic cellular respiration? Where in the cell does each stage
occur and how many molecules of ATP are generated for each stage? Which stage generates
the most amount of ATP?

8. What types of organisms/cels utilize anaerobic celular respiration?

9. What are the two types of anaerobic respiration?

10. What is fermentation?
What organisms utilize fermentation?

11. Where in the cell does
fermentation take place?

12. What are the end-products of fermentation?

13. How many ATP molecules are generated during fermentation?

14. What types of organisms/cells utilize lactic acid anaerobic respiration? How many molecules
of ATP are generated by lactic acid respiration?

Answers

1. Cellular respiration is a process where oxygen molecules are used to break down nutrients like sugar to generate adenosine triphosphate or ATP.

2. All living organisms (except for some bacteria/yeast) perform cellular respiration. But what types? Any, I guess.

3. Aerobic respiration occurs in the mitochondrial matrix of the cell.

4. Anaerobic respiration occurs in the fluid portion of the cytoplasm.

5. The products of aerobic cellular respiration are ATP (energy), plain water and carbon dioxide.

6. The chemical equation for aerobic cellular respiration is 6O₂ + C₆H₁₂₂O₆ = 6CO₂ + 6H₂O + ATP...

7. ...

The predicted values for the four phenotypes form a ratio. The simulated values match this predicted ratio.

Answers

Answer: 9:3:3:1 and approximately

Explanation: just did it

Answer: 9:3:3:1 and approximately

Explanation: edge 2022

Which of the following is possible genotype for the offspring?

Answers

Answer:

a or d

Explanation:

i believe it is one of those

Answer:d. long tailed, stripped fur

Explanation:

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