Question

an increase in the number of phytoplankton in an aquatic ecosystem is always beneficial. please select the best answer from the choices provided. t f

Explanation:

Excessive phytoplankton can lead to algal - blooms. Algal - blooms can deplete oxygen when they die and decompose, and some phytoplankton can produce toxins harmful to other aquatic organisms. So an increase is not always beneficial.

Answer:

F