Question

what are algal blooms

Answer 1

An algal bloom is a rapid increase or accumulation in the population of algae in freshwater or marine water systems, and is recognized by the discoloration in the water from their pigments.

Answer 2

1. $\sf\underline\pink{ Algal~blooms}$ :- It is a rapid increase (or) accumulation in the population of algae in an aquatic system.
2. Algal blooms increases the death rate of the fishes.
3. Algal blooms impart distinct colour to the water bodies and deteriote the quality of water.
4. It causes,blocks in water ways by its excessive growth.
5. Algal blooms of some algae members are toxic to human beings and animals.