D. Darwin's theory of natural selection shows that organisms evolve based on which one's survive the best and thrive.
The answer is: "sexual dimorphism" .
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<span>continue to divide even when they are tightly packed together.
Hope this helps(;</span>
Answer:
When calcium concentration increases during depolarization, it shifts the conformation of troponin and tropomyosin, and actin is able to associate with myosin. As calcium is taken up again by the sarcoplasmic reticulum the muscle cell relaxes.
Answer:
c I think because I remember this from a while ago
