Which of the following statement is correct?

1. Global warming is entirely a natural phenomenon.
2. Global warming is simply an another term used for green house effect.
3. Global warming is the rise in average temperature at the earth's surface.
4. Global warming is caused by ozone depletion.

_______ refers to the maximum limit within which waste can be assimilated by the environment without degradation.

1. Absorptive capacity.
2. Carrying capacity.
3. Assimilation capacity.
4. Opportunity cost.

Out of the following, which is not the function of environment?

1. It supplies resources.
2. It assimilates waste.
3. It sustains life by providing non-genetic and non-biodiversity.
4. It provides aesthetic services like scenery.

India accounts for _______% of world's total iron ore reserves.

1. 14
2. 18
3. 20
4. 21

______ is a clean fuel. It reduces household pollution to a large extent.

1. CNG
2. LPG
3. Gobar gas.
4. None of the above.

How many industries have been identified by Central Pollution Control Board as significant polluters?

1. 14
2. 17
3. 19
4. 21

Environment has many resources for us. A resource that can be totally replaced or is always available naturally, or that is practically inexhaustible is known as:

1. Conventional resource.
2. Renewable resource.
3. Non-renewable resource.
4. Non-conventional resource.

Banning the use of chlorofluorocarbon compounds and other chlorine and bromine compounds is called:

1. Chipko Movement.
2. Apiko Movement.
3. Montreal Protocol.
4. None of the above.

India has ______% of human and ______% of livestock population with only ______% of land area.

1. 20, 16.6, 2.5
2. 16.6, 20, 2.5
3. 2.5, 16.7, 20
4. 20, 25, 2.5

In areas where speed of wind is usually high, wind mills can provide electricity without any adverse impact on the environment but it's not yet been explored on a large scale. What is the correct reason out of the following?

1. Lack of technological devices.
2. High cost.
3. Non-availability of land.

1. Only 2
2. Both 1 and 2
3. Both 2 and 3
4. All of these.