Question

Environmental science multiple choice questions

Answer 1

Environmental pollution refers to the introduction of harmful pollutants into the environment. It has a hazardous effect on the natural world and on the activities of living beings.

The major types of environmental pollution are air pollution, water pollution,noise pollution, thermal pollution, soil pollution and light pollution.

Deforestation and hazardous gaseous emissions also leads to environmental pollution. During the last 10 years, the world has witnessed severe rise in environmental pollution

Answer 2

Answer:

Explanation:

1) Which of the following is the main reason for producing the atmospheric greenhouse effect?

Absorption and re-emission of ultraviolet radiations by the atmosphere

Absorption and re-emission of infrared radiations by the atmosphere

Absorption and re-emission of visible light by the atmosphere

None of the above

Answer: (b) Absorption and re-emission of infrared radiations by the atmosphere

Explanation: The greenhouse effect can be defined as the process by which radiation from the planet's atmosphere warms the planet's surface to the temperature above what it would be without this atmosphere.

2) The salinization can be defined as -

Accumulation of salts in the body

Accumulation of salts in water

Accumulation of salts in animals

Accumulation of salts in the soil

Answer: (d) Accumulation of salts in the soil

Explanation: Salinization is the process of increasing the salt content in the soil. Salts enter the soil via irrigation. Depletion of vegetation occurs due to the increased salinization of the soil.