Why is phytoplankton located near the oceans surface

This aquarium exhibits biotic and abiotic factors in an aquatic environment. one of the abiotic factors is

Plz ! a frog has a genetic mutation in skin cells that causes part of its skin to turn orange the frog will not pass this genetic mutation onto its offspring because, a. the offspring will inherit skin cells from the other parent. b. mutated skin cells cannot divide and produce daughter skin cells. c. skin cells do not contribute genetic material to sex cells. d. parents do not contribute genetic material to their offspring.

What percentage of light hits earth's surface directly?