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nadya68 [22]
3 years ago
5

An energy pyramid is represented below. The energy for use by

Biology
1 answer:
Airida [17]3 years ago
7 0

Answer:

The answer is the sun.

Explanation:

Level a represents the producers which you can tell, by their name, that they make their food. Producers are mainly comprised of the plants of our world. They get their energy from the sun and through photosynthesis, they turn it into energy.

By the way, B would be primary consumers which are the herbivores, C are the secondary consumers which include us people, and D are the decomposers, which include worms.

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9. Knowing what you know about how a substance travels in
Romashka-Z-Leto [24]

Answer:

Higher

Explanation:

Molecules such as oxygen move from a higher concentration to a lower concentration across a semi-permeable membrane. This process is called simple diffusion.

Therefore, for oxygen to leave the alveoli and enter the blood, there would need to be a higher concentration of oxygen inside the alveoli and a lower concentration of oxygen in the blood.

6 0
3 years ago
Which component is present in some viruses but absent in others?
kifflom [539]

Answer:

The correct answer would be the virus envelope.

Viral envelope is a protective covering present around the capsid proteins in some viruses.

It is usually derived from the cell membrane of the host and thus it is composed of lipid and viral proteins.

It provides stability to the viral particle, helps in protecting the viral genome, and aids in the fusion of the virus with the membrane of the host.

Examples of viruses in which envelope is present: herpesviruses, poxviruses, flavivirus, hepatitis D et cetera.

Examples of viruses in which envelope is absent: adenoviridae , papillomaviridae , picornaviridae , caliciviridae et cetera.

4 0
3 years ago
Read 2 more answers
What is olfactory receptor????<br><br><br>First time....3rd​
Bumek [7]

Answer:

It is a type oe of receptor present in our body

Explanation:

It's is a type of receptor located in our noses which Helps us to smell different things. Some times when we get a cold the olfactory receptors get blocked and this prevents us from smelling things. And this also effects our sense of taste

3 0
3 years ago
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The force of air pushing down on everything due to gravity is called what?
liberstina [14]

I think it is A hope this helps


4 0
3 years ago
Read 2 more answers
When looking at your pictures in order, describe the changes to the area. What changes happened first? Why do you think that is?
Veronika [31]

Answer:

5. no i think that its the same as number 2 because based on number 2, at first there is climate change but then, flowers began to grow which is similar to the pictures protrayed in the website where at first forest trees are burned and then colonizing trees helped to change the landscape

hope this helps! :)

7 0
2 years ago
Read 2 more answers
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