Environmental Science - Study Mode

[#171] This is used as an index for fuel consumption:
Correct Answer

(C) Heating degree-days

Explanation

Solution: This is used as an index for fuel consumption heating degree-days.

[#172] The most abundant gas emitted from volcanoes is:
Correct Answer

Nitrogen

Explanation

Solution: Volcanoes also give off greenhouse gases. The most abundant gas released from volcanic eruptions is water vapour. Other emitted gases include carbon dioxide (CO2), sulfur dioxide (SO2), hydrogen sulfide (H2S), carbon monoxide (CO), hydrogen chloride (HCl), and hydrogen fluoride (HF).

[#173] The animal which consumes decaying organic matter is _________
Correct Answer

(B) Detritivore

Explanation

Solution: A detritivore is an animal feeding on decaying organic matter. It is a heterotroph that obtains nutrients by consuming detritus. Examples include millipedes, earthworms, fiddler crabs, sea cucumbers.

[#174] Which one of the following environmental pollutants has the problem of biomagnifications?
Correct Answer

(C) Hg fungicides

Explanation

Solution: Hg fungicides has the problem of biomagnifications.

[#175] Bell-shaped polygonal pyramid indicates
Correct Answer

(B) moderate percentage of young individuals

Explanation

Solution: The bell-shaped pyramid represents pre-reproductive and reproductive individuals which are basically the young individuals.