Answer:
Sarcomeres are functional units of skeletal muscle fiber.
Explanation:
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D. They help plants get nutrients and water form soill This is called mutualism.
Answer:
Topsoil is the part of a soil profile that is made up of partly weathered rock.
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The Sun is a major source of energy for most ecosystems and organisms.
Blood is pushed through the organism by the heart, and brings nutrients and oxygen to our tissues. It also takes away waste and carbon dioxide from tissues.
