Question

1. From what the organs and organ systems are made up of?
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Answer 1

Answer:

Cells make up tissues, tissues make up organs, and organs make up organ systems.For instance, digestive system organs cooperate to process food. The survival of the organism depends on the integrated activity of all the organ systems, often coordinated by the endocrine and nervous systems.

Answer 2

Answer:

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Explanation:

Cells make up tissues, tissues make up organs, and organs make up organ systems. ...