The muscular system can be broken down into three types of muscles: skeletal, smooth and cardiac, according to the NIH. Skeletal muscles are the only voluntary muscle tissue in the human body and control every action that a person consciously performs. The muscle that is found at the heart is Cardiac Muscle. It is an involuntary, striated muscle that constitutes the main tissue of the walls of the heart. Hope this helps.
One of the most abiotic factor that may affect humans directly is waster availability because with out water we can get dehydrated and die.
It is b. If I am wrong I am sorry
Answer:
Thomas Eddison
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Well there are 8 but the one who created it by hand was Thomas Edison
Answer:
by having ex donateing sperm reproducing and helpkeep earth clean and stop violence
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