Industrial pollution degrades environment in the following ways :
(i) Air is polluted by gases like-carbon dioxide, carbon monoxide etc., which are harmful for humans.
(ii) Industrial effluents pollute rivers. Paper pulp, textile, chemicals industries pollute land and soil due to their toxic materials.
Steps to control industrial pollution can be explained as follows :
(i) Smoke can be reduced by using oil or gas instead of coal in factories.
(ii) Treating hot water and effluents before releasing them in rivers and ponds.
(iii) Minimizing use of water for processing by reusing and recycling into two or more successive stages.