Answer:
I would say the first option
Explanation:
Diaphragm...is the muscle that helps in respiration.....there are also some other but....you said flat so diaphragm !
This is false. The
Enzymes are proteins that speed up the rate of chemical reactions in the cell
without requiring high temperature. Antibodies are proteins which react to
alien or unknown organisms that enter our body like bacteria and viruses.
I hope it helps,
Regards.
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