Answer:
There are two major classes of hormones 1. Proteins, Peptides, and modified amino acids 2. Steroids. In general, steroids are sex hormones related to sexual maturation and fertility.
Explanation:
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The answer about muscles is extensors
A .<span>Decomposition is a chemical change because the organism is broken down into new substances.</span>
Answer:They have a large number of mitochondria.