Environmental Science - Study Mode

[#366] The thickness of ozone layer is measured in
Correct Answer

(B) Du

Explanation

Solution: A dobson unit is the most basic measure used in ozone research. One Dobson Unit (DU) is defined to be 0.01 mm thickness at STP (standard temperature and pressure). Ozone layer thickness is expressed in terms of Dobson units, which measure what its physical thickness would be if compressed in the Earth's atmosphere.

[#367] Exponential growth occurs when there is
Correct Answer

(B) No environmental resistance

Explanation

Solution: Exponential growth occurs when there is no environmental resistance.

[#368] An increase in albedo would be accompanied by ____ in radiative equilibrium temperature.
Correct Answer

(B) A decrease

Explanation

Solution: An increase in albedo would be accompanied by a decrease in radiative equilibrium temperature.

[#369] Many wild plant and animals are on the verge of extinction due to
Correct Answer

(A) Habitat destruction

Explanation

Solution: But sometimes extinctions happen at a higher and a faster rate than usual. Factors such as over-exploitation, large body size, small population, massive habitat loss and position at a higher trophic level favor extinction. A plant podophyllum is at the verge of extinction due to over-exploitation.

[#370] Most harmful environmental pollutants are
Correct Answer

(C) non-biodegradable chemicals

Explanation

Solution: Most harmful environmental pollutants are non-biodegradable chemicals.