TOPIC TAUGHT - CH 12 POLLUTION ( 24/8/20, 25/8/20, 26/8/20)
Pollution is the presence of any harmful or poisonous substance in the environment.
Types of Environmental Pollution-
1) Air pollution
2) Water pollution
3) Land pollution
4) Noise pollution
Covered the topic air pollution
and water pollution and their
causes, effects and preventive
measures.
Homework -
Read the chapter pollution.
Learn textbook questions of
Our World and Its Physical Features
for the class test.
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