The muscular system is responsible for the movement of the human body. Attached to the bones of the skeletal system are about 700 named muscles that make up roughly half of a person's body weight. Each of these muscles is a discrete organ constructed of skeletal muscle tissue, blood vessels, tendons, and nerves.
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having crops that can grow at any temperature is the answer!
Hmm, learning about this what a while back, but i would say (1)
Answer: farmers would choose animal traits by making them breed with each other making the baby a good source of help got the farmers and they can give them traits that will be used to give them specific jobs to do.
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