Adding an organism to a food chain does not affect the other members of the food chain, but removing an organism does.
select the best answer from the choices provided
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it enhances antibody production by t cells of the adaptive immune system.

hope i'm right

explanation:

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

the answer is c. altitude. hope this ! #brainiac