Question

What are pesticides? How does the excessive use of them effect the environment?​

Answer 1

Answer:

pesticides are chemicals used to fertile the soil . the excessive use of pesticides harm the environment as they cause water pollution and also effect the plants

Answer 2

Pesticides are made up of chemicals which are used to kill the pests and prevents crops from pests damages.
Excessive use of pesticides leads to soil degradation
It also results in algal bloom
Algal bloom is a phenomenon where the excessive pesticides are washed down to the nearby pond or river or lake and supports the growth of algae and cuts off the supply of sunlight and O2 for the aquatic organisms.
Excess pesticides leads to water pollution
It also affects the animal life