_______ 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.

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.

The numbers of motor vehicles have increased from _____ in 1951 to ______ in 2003.

1. 3 lakh, 67 crores.
2. 67 lakh, 3 crores.
3. 30 lakhs, 67 crores.
4. 67 lakhs,, 30 crores.

Which of the following is a major cause of supply-demand reversal?

1. Urbanisation.
2. Rapid increase in population.
3. Use of HYV seeds.
4. All of the above.

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.

Which of the following would be more effective for reducing the enhanced greenhouse effect?

1. Living in tropics.
2. Buying organic apples.
3. Drinking bottled water.
4. Driving a car with CNG as a fuel.

_______ 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.

Which of the following is a major cause of environmental degradation?

1. Urbanisation.
2. Rapid increase in population.
3. Use of HYV seeds.
4. All of the above.

_______ is an international treaty designed to protect the ozone layer by phasing out the production of a number of substances believed to be responsible for ozone depletion.

1. Brundtland Commission.
2. Our Common future.
3. The Montreal Protocol.
4. Commission for Ozone Depletion.

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.