1.
There are _______ types of environmental pollution.
2.
The green houses gases allow the sunlight to reach the Earth, but does not allow leaving the heat of the Earth, this process is called _______ effect.
3.
The germs present in it caused typhoid;
4.
Pollutant gases in air combine together in presence of sunlight and produce _______.
5.
The invisibility in winter is due to _______.
6.
The matter that could not break down into simple substances by natural process is called _______materials.
7.
Carbon dioxide, methane, nitrogen oxide, etc. are called _______ gases.
8.
_______ gases are considered fossil fuel.
9.
The increase in the average temperature of the Earth is called _______ warming.
10.
_______ were formed from the buried remains of plants and animals.
11.
Which of the following is not a greenhouse gas?
12.
Which disease is caused due to air pollution?
13.
The poisonous substances emitting form the chimney of the factories and smoke after dissolving in rain water produces _______ rain.
14.
Which one of these is non-biodegradable?
15.
To reduce pollution of non-biodegradable things the principle of _______ is applied.
16.
Which one of the following acts causes most of the air pollution?
17.
Any change in the environment which is harmful for living thing is called environmental _______.
18.
The substances that cause pollution are called _______.
20.
Such matters which become part of the soil after broken down by natural process into simple substances are called _______ materials. (Meat, paper, etc).
21.
The particular place where an organism lives is called its _______.
22.
The greenhouse is _______ inside even in winter season.
23.
Greenhouse is a house made of _______ material.
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