Question

Element

Percentby Mass

1. The most abundant
and considered as the key element in aerobic respiration,
binding of hemoglobin fo form 02 and used by the mitochondrion to produce energy.
2. The important component of amino acids.
3. Found in bones and teeth, used to build strong structural compound muscle
contraction and protein regulation.
4:Used in nerve conduction and regulating the heartbeat.
5. Important for nerve transmission and muscle function.​

Answer 1

Answer:

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Explanation:

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