Environmental Science - Study Mode

[#676] One atom of chlorine can destroy over __________ molecules of ozone.
Correct Answer

(A) 100000

Explanation

Solution: One chlorine atom can destroy over 100,000 ozone molecules before it is removed from the stratosphere. Ozone can be destroyed more quickly than it is naturally created. methyl bromide A compound consisting of carbon, hydrogen, and bromine.

[#677] BOD of a river water is found very high. This means water
Correct Answer

(B) is highly polluted

Explanation

Solution: BOD (Biological Oxygen Demand or Biochemical Oxygen Demand) is the amount of dissolved oxygen, expressed in milligrams of oxygen per litre of water, consumed by micro-organisms to decompose the organic matter present in water.

[#678] Which of the following has the least similarity when comparing two examples of the same biome located in different parts of the world?
Correct Answer

(C) Continent

Explanation

Solution: Continent has the least similarity when comparing two examples of the same biome located in different parts of the world.

[#679] On a clear, calm, night, the ground and air above cool mainly by this process:
Correct Answer

Evaporation

Explanation

Solution: On a clear, calm, night, the ground and air above cool mainly by this process radiation.

[#680] What is desertification?
Correct Answer

(D) all of the above

Explanation

Solution: all of the above