MEDIUM
Earn 100

Smoke and fog combine together to form .

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Important Questions on Pollution of Air and Water

HARD
People living in a certain region have a high incidence of skin cancer. Can you identify one possible cause for this?
MEDIUM
The rise in temperature of the Earth due to the trapping of heat is called _____.
(Global warming/Pollution)
EASY
 We should use a car to travel short distances.
EASY
The harmful gases from the vehicles and factories are added to the atmosphere and cause _____. (air pollution/soil pollution)
HARD
What is global warming? What can be its consequences?
EASY

Choose the appropriate word and fill in the blank.

When harmful substances enter the environment, they _____ (pollute, save) it.

EASY
Name two gases present in polluted air which can cause acid rain.
HARD
What is global warming? Name the gas whose increasing percentage in the air is leading to global warming. State a harmful effect which can be caused by global warming.
MEDIUM

Complete the flow chart given below:

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EASY
Burning leaves causes air pollution.
EASY
The ozone layer forms a shield over the Earth's atmosphere and blocks harmful_____.
EASY
Write three ways in which you can contribute in saving the environment.
MEDIUM
Using electricity carefully causes an increase in global warming.
EASY
Why is it not a very good idea to use aerosol sprays?
EASY
 Why does the government insist on using CNG vehicles?
EASY
What is smog? How is smog formed? What are its harmful effects?
HARD
Which of the following is not an effect of global warming?
EASY

Dirty air can make us fall sick. We must try to keep the air clean. Put a cross against the pictures which makes the air dirty.

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