Which two activities provide the reactants for cellular respiration? releasing air and exercising
breathing in air and exercising
releasing air and eating food
breathing in air and eating food

it enhances antibody production by t cells of the adaptive immune system.

hope i'm right

explanation:

hello there the answer is d

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.