Question

Biological treatment of water pollution is done with the help of

Answer 1

Answer:

Biological treatment of water pollution is done with the help of phytoplanktons.

Explanation:

Phytoplanktons which are also known as  microalgae are  indistinguishable to terrestrial plants which consists of chlorophyll and need sunlight to grow.

They absorb energy from the Sun and nutrients from the water to manufacture their own food. It liberates out molecular Oxygen into the water. They are the main source of food item  in both aquaculture and mariculture.