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.

Which are the catch phases in the following UNCED definition of Sustainable Development:
 "Development that meets the need of the present generation without compromising the ability of the future generation to meet their own needs".

1. Need.
2. Future generation.
3. Need and present generation.
4. Need and future generation.

_______ is the cost of next best alternative sacrificed in order to take benefit of one given opportunity.

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

What is environment?

1. It is sum total of surroundings.
2. It includes biotic and abiotic factors that influence each other.
3. It refers to socio-cultural and economic set up.
4. It is sum total of physical and psychological surroundings.

CPCB stands for:

1. Controller of Pollution Correction Board.
2. Central Pollution Control Board.
3. Control, Prevention and Correction Board.
4. Control Pollution Central Board.

World's total iron-ore reserves accounted by India are nearly:

1. 10%
2. 20%
3. 30%
4. 40%

Two major environmental issues facing the world today are ______ and _______.

1. global warming and air pollution.
2. global warming and ozone depletion.
3. air pollution and noise pollution.
4. ozone depletion and pollution.

Name a pesticide which is environment friendly.

1. Chemical Pesticides.
2. Neem Based Pesticides.
3. Urea.
4. None of the above.

Absorptive capacity is defined as:

1. Ability of the environment to absorb degradation.
2. Resource generation within the assimilating capacity of the environment.
3. Average number of organisms living in a given environment.
4. The minimum population surviving in the world as a whole.

The environment performs four vital functions and the environment is able to perform these functions without any interruption as long as the demand on these functions is within its carrying capacity. 'In the given statement carrying capacity' implies to:

1. The resource extraction is not above the rate of regeneration.
2. Wastes generated are beyond the absorptive capacity of the environment.
3. The resource extraction is not below the rate of regeneration.
4. The resource and the wastes generated are within the assimilating capacity of the environment.

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