Natural selection is a mechanism for evolution.
O True
O False

Answers

Answer 1
the answer is true. Bc the stronger they are the more likely they will survive.
Answer 2

true

Explanation:

Its true because something has to die for others to thrive.


Related Questions

3. Assertion (A):- Plasma membrane is a selectively permeable membrane.
Reason(R):- Plasma membrane allows entry and exit of substances from cell through the process of diffusion.
a. Both A and Rare true and Ris correct explanation of the A
b. Both A and Rare true but Ris not the correct explanation of the A
C. A is true but Ris false
d. Both A and Rare false
4. Plasmodium is an example of Bacteria​

Answers

Answer:

the answer is option B. both A and R are true but R is not the correct explanation of A

Why do you think Elodea
has so many chloroplasts in each cell?

I WILL GIVE YOU BRAINLYEST!!!

Answers

I believe this is because they lack a cell wall and have no central vacuole.

Answer:

It depends It is important to understand the fact that the number of chloroplasts in an elodea cell can vary. The main idea is that there are not a fixed number of chloroplasts in elodea cell. This signifies that there is not a specific amount in each cell.

I Hope It Helps.

Please help me ASAP or else I’ll fail

Answers

Third option:
Sexually will reproduce more
Different genetics will have more adaptability
Third option: one that produces sexual and has off spring that are genetically different.

The process of _______ involves the removal of dissolved minerals from water so it can be used for drinking. a. desalination b. water reclamation c. greywater use d. irrigation

Answers

Answer:  

a.

desalination

Explanation:

a.

desalination

The process of desalination involves the removal of dissolved minerals from water so it can be used for drinking.

What is the desalination process?

Desalination is the process by which mineral salts dissolved in water are removed. Currently, this process, applied to seawater, is one of the most used to obtain fresh water for human or agricultural consumption.

With this information, we can conclude that The process of desalination involves the removal of dissolved minerals from water so it can be used for drinking.

Learn more about desalination in brainly.com/question/1329903

Which image shows the place where the pressure and density of the atmosphere would be lowest? Waves at a beach with palm trees. Mountains covered with snow. A desert.
This is earth science not biology there wasn't a choice for it, Thank You!

Answers

Answer:

b

Explanation:

Answer:

b

Explanation:

they deleted my answer to day be cus he or her was

MAF

A forest fire caused by lightening destroys an entire forest. The population of deer was drastically reduced within the forest leading to a decrease in genetic variation. This situation is an example of -

Mutations
Gene Flow
O Genetic Drift
Divergent evolution​

Answers

Answer:

I'm like 90% sure that it is Gene flow

Explanation:

Which of the five stages of respiration takes place at the alveoli?

Answers

Answer:

External respiration is the exchange of gases with the external environment, and occurs in the alveoli of the lungs.

The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out. External Respiration. Exchange of gases between air and blood at pulmonary capillaries (Alveoli) is the second stage. So it would be the 2nd stage

1) Eubacteria cells lack a nucleus, and are therefore________

Viewing eubacteria requires a microscope,because they all single celled organisms.another word for single celled is_______

Answers

Answer:

The correct answer is - prokaryotic and unicellular.

Explanation:

Eubacteria is known as the true bacteria and belongs to the prokaryotic type of cells which is characterized by no double-membrane organelles or the nucleus. All the genetic material is present in the cytoplasm itself.

These bacteria are single-cell microscopic organisms as they are very minute to see by the naked eyes and required a microscope to study. Another word for the single-cell organisms is unicellular.

If humans change the function or equilibrium of one of Earth's systems, this will not change
the function or equilibrium of all of Earth's systems.
True
False

Answers

Answer:

False.

Explanation:

All of the things found in the Earth system can be categorized into four (4) main categories and these includes;

I. Land: this subsystem forms a sphere which is generally referred to as litosphere.

II. Water: this subsystem forms a sphere which is generally referred to as hydrosphere. It comprises of landforms such as mountains, valleys, plateaus, ridge, rocks, etc.

III. Air: this subsystem forms a sphere which is generally referred to as atmosphere. This sphere comprises of gases such as oxygen, carbon dioxide, nitrogen, etc.

IV. Living organisms: this subsystem forms a sphere which is generally referred to as biosphere. It comprises of all living things such as humans, animals and plants.

If humans change the function or equilibrium of one of Earth's systems, this will significantly change the function or equilibrium of all of Earth's systems. Consequently, these changes result in environmental phenomenon such as volcanoes, earthquakes, tornadoes, wildfire, etc.

Can you help me? Please

Answers

1. pH (fun fact, it means potention of hydrogen )

2. H+

3. hydronium ion

4. 7

5. 7

6. OH-

7. acidic

8. alkaline

Which macromolecule is needed for lactic acid formation and alcohol fermentation to proceed with their processes?


IN YOUR OWN WORDS
DONT COPY FROM THE INTERNET

Answers

Answer:

sugar

Explanation:

sugar is the required macromolecule

In the lactic acid formation, pyruvate changes to the lactose which is the anaerobic form of respiration. Pyruvate changes to alcohol and carbon dioxide.

What is the main ingredient for lactic acid fermentation ?

It is the sugar molecule that is needed for the lactic acid fermentation.

Both the  types of  the fermentation requires two primary components which are a sugar supply and  bacterial culture where alcohol fermentation uses the  forms of  the yeast where the lactic acid fermentation usually depends on  the lactic acid bacteria.

Lactic acid fermentation takes place in some of the  strains of  the bacteria and in  the even skeletal muscle and even  produces lactic acid . Alcoholic fermentation takes place in the  yeast and just  produces ethanol with carbon dioxide.

Lactic acid bacteria is a type of gram-+ve bacteria which use carbohydrates as only and main carbon source. Later on lactic acid bacteria is generally cocci or rods usually have the  strong tolerance to low pH.

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Historic Westminster Abbey in London, England, has been damaged by the sulfur dioxide and nitrogen oxide in acid rain. This is an example of _____.

biological weathering
chemical weathering
physical weathering

Answers

Answer:

i think its chemical weathering

Explanation:

hehe

Fruits help your body:
Produce vitamin D
Make seratonin
Sleep
Heal

Answers

Answer:

Explanation:

Fruits are an excellent source of essential vitamins and minerals, and they are high in fiber. Fruits also provide a wide range of health-boosting antioxidants, including flavonoids. Eating a diet high in fruits and vegetables can reduce a person's risk of developing heart disease, cancer, inflammation, and diabetes

how does the data that Scientists collect get used with climate models? scientists collect data then developed and use models to maken predictions about future climate conditions.

Answers

Answer:

 To make these predictions, meteorologists use weather data and forecast models to determine current and future atmospheric conditions. Because weather takes place hour by hour, forecast models use current atmospheric and oceanic conditions to predict future weather.

How do trace chemicals affect the environment?

Answers

Answer:

Accumulation of trace elements, especially heavy metals, in the soil has potential to restrict the soil's function, cause toxicity to plants, and contaminate the food chain.

Explanation:

Answer:

Accumulation of trace elements, especially heavy metals, in the soil has potential to restrict the soil's function, cause toxicity to plants, and contaminate the food chain.

What are the effects of chemical reaction on life and environment?

Environmental pollution is the realease of chemical waste that causes harmful effects on the envrionment. Environmental pollution is offten divided into: pollution of water supplies, the atmosphere and the soil. People most often notice the damage of chemical pollution on animals and plant life.

Is chemical change harmful or helpful to the environment?

Chemical and physical changes occur all around us all the time. These changes are essential parts of our daily lives, for example, digesting food, combustion, osmosis, and phase changes. However, a few of the chemical and physical changes that occur daily are harmful for the environment.

Explanation:

Hope this helped plz mark me brainliest> Good luck

How does farming change the biosphere?
A) It increases the amount of carbon dioxide in the atmosphere, contributing to the buildup of greenhouse gases.
B) It induces changes in global biogeochemical cycles.
C) It speeds up the decomposition of organic matter in soil.
D) It contributes to the loss of competing ecosystems, the decrease of biological diversity, and the increase in endangered species.
E) All of the above

Answers

Answer:

A

Explanation:

It increases the amount of carbon dioxide in the atmosphere, contributing to the buildup of greenhouse gases.

What do the decomposers do to return atoms back to the biogeochemical cycles

Answers

Answer:

i think it is none of your ssniper wolf

Explanation:

What causes the phases of the moon ?

Answers

Answer:

A).

So the basic explanation is that the lunar phases are created by changing angles (relative positions) of the earth, the moon and the sun, as the moon orbits the earth.

Explanation:

Answer:

a

Explanation:

the correct sequence in the expression of a trait

Answers

Answer:

The amino acid sequence is present in proteins and proteins are responsible for providing character.

Explanation:

Thus, the correct sequence in the expression of a trait gene protein trait.

The nucleus of an atom is composed of:
O protons, neutrons and electrons
O protons and electrons
O neutrons and electons
O protons an neutrons

Answers

Answer:

it is b

Explanation:

Answer:

protons and neutrons

Explanation:

What is the greenhouse effect?

Answers

Explanation:

The greenhouse effect is a natural process that warms the Earth's surface. When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. The absorbed energy warms the atmosphere and the surface of the Earth.

Which of the following normally leads to the production of functional messenger RNA in eukaryotic cells?

Answers

Answer: The removal of portions of RNA known as intervening sequences (introns)

Explanation:

The removal of portions of RNA is known as intervening sequences (introns).

What is the process of splicing?

In order to enable the translation of mRNA into a protein, RNA splicing puts together the protein-coding regions (exons) and cuts out the intervening, non-coding segments of genes (introns) from pre-mRNA.

Intron sequences are cut out and exon sequences are joined during the splicing process.

As RNA matures, introns are cut out via RNA splicing, which means that they are not expressed in the resulting messenger RNA (mRNA) product.

In contrast, exons continue to be chemically bound to one another to produce mature mRNA. Exons are expressed sequences, whereas introns can be thought of as intervening sequences.

Therefore, the removal of portions of RNA is known as intervening sequences (introns).

Learn more about splicing, here;

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Where does FGF5 occur in the cell?

Answers

Answer: FGF5 is produced in the outer root sheath of the hair follicle as well as perifollicular macrophages, with maximum expression occurring in the late anagen phase of the hair cycle. The receptor for FGF5, FGFR1, is largely expressed in the dermal papilla cells of the hair follicle.

Explanation:

Ducks have flat beaks and webbled legs

Answers

True



Explanation: none needed
True. Yes they do have flat beaks and webbed legs

Suppose that this population of mice has stabilized so that both white and brown appear. White mice survive better in the winter and brown mice survive better in the warmer months. If a group of these mice migrated to an area that didn't get snowy in the winter, what do you think would be the long term effect on the color of these mice? Explain why.

Answers

Answer:

The population of the white mice would significantly decrease, and most of the mouse population would be with brown fur.

Explanation:

As stated in the question, the brown mice survive better in warmer times. This is due to the fact that with winter and snowy times it makes it harder for prey to spot the WHITE mice v.s. the BROWN mice who would very easily be spotted by the prey in snowy regions.


Which hypothesis helps to explain why all organisms share the same genetic code?

Answers

RNA , RNA molecules may have been able to self-replicate without the help of other molecules. If early RNA molecules were able to copy themselves to build new RNA molecules, this helps to explain why all organisms share the same genetic code.

What is shown in the
image below?

A. Food chain
B. Trophic chain
C. Food web
D. Energy web

Plz help on a timed quiz!

Will give 30 points to who answers and will try to give Brainiest if right :)

Answers

The answer for your question is “C : Food Web”

Answer:

the answer is food web.

Explanation:

it says it at the top of the picture :)

A newspaper article reported that a fossil was found that was 200,000 years old according to generally accepted radioactive
determination because the fossil was found closer to the Earth's surface than were previously discovered fossils of the same
Older rock layers commonly lie deeper underground than younger ones.
Older rock layers may be pushed closer to the surface by geologic processes
The age of a rock layer can often help in determining the age of the fossils it contains
Fossils form only under certain conditions

Answers

Answer: Older rock layers may be pushed closer to the surface by geologic processes.

Explanation:

Hybridization______.

Answers

Answer:

i guess it would be C but I'm not sure bout that

structure and function
When cells of
join together, they form

obvious, cells

different, tissue

similar, tissue

Answers

Answer:

I think it may be b but the question is a little confusing

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