It’s has cell wall to keep it safe
The hair, skin, and nails are part of the integumentary system. This system grows from biotin.
Answer: D) Integumentary
no one like Jesus
B; enlargement of the frontal lobe
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It can make you develop an eating disorder
The 650 skeletal muscles in the human body contract when they receive signals from motor neurons, which are triggered from a part of the cell called the sarcoplasmic reticulum. Motor neurons tell your muscles to contract and the better you become at having those signals tell your muscles to contract, the stronger you can get.
