Answer:
Sarcomeres are functional units of skeletal muscle fiber.
Explanation:
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Natural selection is the process by which individuals who are best suited to the environment tend to leave (on average) more offspring than others.
Evolutionary changes take place over many generations and through millions of years of natural selection. For the genes to survive, they must be among the strongest.
It is water soluble and therefore the substance is hydrophilic
The act on depending on something.