Nitrogen is needed by organisms to make amino acid which is essential for protein synthesis
It is antigen a,antigen b and no antigen
An action potential is the variation of the electrical potential associated with the passage of a pulse along the membrane of a muscle cell or a nerve cell.
<h3>What is a nerve cell?</h3>
The nerve cells are the cells involved in the formation of nervous tissue. it helps in the conduction of stimuli through the nervous system.
An action potential is the variation of the electrical potential associated with the passage of a pulse along the membrane of a muscle cell or a nerve cell.
Thus, the answer is action potential.
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Without volcanos, Many islands won't exist, like the Hawaii islands or that archipelago