Question

How does algal blooms cause eutrophication of a water body?

Answer 1

eutrophication- destroying of aquatic life wit

h pesticides is called eutrophication.
When these pesticides enter any river with the help of rainwater , it works as extra nutrients for alga and it make up algal bloom,
algal bloom means , a wall like structure on the surface of water body and this wall like structure stop sunlight to enter in.
When sunlight did nat enter the water body and not getting oxygen , so they started to die.