Quiz: Environmental Toxicology and Pollution

1.

Eutrophication in lakes is primarily caused by excessive input of:

1. Nitrogen

2. phosphorus

3.  Carbon dioxide

4. Heavy metals

5. Pesticides

2.

Which of the following is an example of a non-point source of pollution?

3. Biomagnification of persistent organic pollutants (POPs) in food webs primarily affects:

4. The use of anthropoid hazard chemicals like DDT causes reduction in fish population
because the chemical mimics the effect of

5.

The phenomenon of acid rain is primarily caused by emissions of:

6.

Which of the following is NOT a greenhouse gas?

7.

The thinning of the ozone layer is most pronounced over:

8. Intake of lead may primarily cause the damage of

9.

The process of removing pollutants from industrial wastewater before discharge is called:

10. The ionizing radiation, which affects the activities of most of the enzymes is due to

11.

The Montreal Protocol is an international treaty designed to protect the ozone layer by phasing out the production of:

12. Which of the following is NOT a major source of heavy metal pollution in aquatic ecosystems?

13.

Which type of radiation is most harmful to living organisms?