B-monomer
I am not sure about the second one but i think it's C
Answer:
The total amount of matter on Earth constantly increases.
Explanation:
This is because there are always new things taking birth every second and they have matter in them, so the matter is increasing constantly.
This simple concept describes the process by which cells exchange toxic gases for life-sustaining gases. It also describes how nerve cells are able to send electrical signals to each other cells. Diffusion tells embryonic cells where to crawl and when they have arrived. Diffusion also makes it possible to reduce the loss of body heat to the surrounding environment.
<em>Answer:</em>
<em>C) </em><u><em>mitochondrion</em></u>
Explanation:
Mitochondria mitochondria is a semi autonomous organelle.
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( . . ) <em>hope this helps!</em>
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It has been repeatedly tested and is widely accepted.