<span>Animals and plants have cells that are specialized by the process of differentiation.</span>
Answer:
About five million million hydrogen atoms could fit.
Explanation:
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I believe the answer is C. The weaker members may die out and the stronger members become the species
Answer:
Humans have a heart with two atria and two ventricles that pushes blood in one direction. Some animals have hearts similar to humans but, other animals have only one atrium and one ventricle or a cardiovascular system that can push blood in two directions.
