ACTIVITIES
1. Do you realise the importance of protecting the environment from pollution?
Check how much you remember by answering the following questions:
(a) The air mixed with dust and smoke is polluted air. How does the air
get polluted in an industrial area?
Answer: The air mixed with
dust and smoke is polluted air. In an industrial area the air get polluted when
smokes are coming out of chimneys and the air becomes thick with clouds of
smoke.
(b) Why do we need clean and fresh air?
Answer: We need clean and
fresh air to breathe. Without breathing no life can be survive in this world.
(c) What happens when the air becomes polluted?
Answer: When the polluted air goes into our lungs, we
can fall ill.
(d) Why is our environment getting spoilt?
Answer: Our environment is
getting spoilt due so the pollution. The polluted air, water, and soil
everything is very dangerous for our environment.
(e) How can we protect our environment?
Answer: There have some important point given below to
protect our environment:
· To make people
aware of the dangers of destroying the world around us.
· Plantation is a
great and most successful way to protect our environment.
(f) How do green plants and
trees help us and our environment?
Answer: The
green
plants and trees protect us and our environment. It enriches the air with
oxygen. They use the carbon dioxide and other harmful gases.
(g) What steps should we take to keep our environment clean?
Answer: To keep our environment clean we should be
taken the steps given below:
• Cars and buses should be
cleaned regularly to reduce the release of harmful gases.
• Factories must be adopting
measures to protect the environment.
(h) How does water become polluted?
Answer: The garbage that
we dump into rivers pollutes the water, as well as the industrial waste and the
wastes from commercial establishments make the river and other sources of water
toxic.
(i) How does soil become polluted?
Answer: Use of too many
pesticides, dumping of non degradable and industrial wastes damage the soil and
make it polluted.
2. In the lesson you read about some ways in which our environment gets
polluted. In your notebook make three columns like this:
|
A |
B |
C |
|
Air
pollution |
Water
pollution |
Soil
pollution |
|
Fumes
of automobiles |
garbage
that we dump into rivers |
pesticides |
|
Cars
and buses guses |
the
industrial waste |
dumping
of non degradable |
|
Cutting
tree |
the
wastes from commercial establishments |
industrial
wastes |
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