Question

Insects used as ecological indicator of water pollution

Answer 1

Answer:

diatoms are cheif indicator of water pollution

u cannot found them

in polluted water

Answer 2

Answer:

Here is your answer..

Explanation:

CADDISFLIES ( Trichoptera ) are group of insects whose larvae occur in all types of fresh water. Particular species are sensitive to water pollution and that's why they are used as bio indicators of water purity......