Is plankton biotic or abiotic?

Explanation:

Not only is the biota important, but the abiotic factors in the ocean are also important because both groups work together. The abiotic factors in the ocean help the ocean to 'work'. For example, phytoplankton (autotrophs) need light, nutrients, CO2 (dissolved gases) to photosynthesize.

it is b

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answer; i believe that the correct answer is(d) nondisjunction during meiosis;