An increase in the concentration of the toxicant at successive trophic levels is known as:

1. Biomagnifications

2. Biodeterioration

3. Biotransformation

4. Biogeochemical cycling

Acid rain is caused by increases in the atmospheric concentration of?

1. $S{O}_2$ $and$ $N{O}_2$

2. $S{O}_3$ $and$ $CO$

3. $C{O}_2$ $and$ $CO$

4. $O_3$ $and$ $dust$

Eutrophication of water bodies leading to the killing of fishes is mainly due to non-availability of:

1. Food

2. Light

3. Essential minerals

4. Oxygen

Rachel Carson's famous book 'Silent Spring' is related to:

Which of the following is not one of the prime health risks associated with greater UV radiation through the atmosphere due to the depletion of the stratospheric zone?

The zone of atmosphere in which the ozone layer is present is called:

1. Ionosphere

2. Mesosphere

3. Stratosphere

4. Troposphere

A scrubber in the exhaust of a chemical industrial plant removes:

1. Gases like sulphur dioxide

2. Particulate matter of the size 5 micrometer or above

3. Gases like ozone and methane

4. Particulate matter of the size 2.5 micrometer or less

Kyoto-Protocol was endorsed at:

1. CoP-3

2. CoP-5

3. CoP-6

4. CoP-4

Global warming can be controlled by: