Environmental Science - Study Mode

[#546] The pyramid of energy in any ecosystem is
Correct Answer

(A) Always upright

Explanation

Solution: An energy pyramid (sometimes called a trophic pyramid or an ecological pyramid) is a graphical representation, showing the flow of energy at each trophic level in an ecosystem. The base of the energy pyramid indicates the energy available within primary producers.

[#547] Barnacles growing on the back of whale is an example for
Correct Answer

(D) commensalism

Explanation

Solution: The barnacles passively filter food, using tentacle-like cirri, as the host swims through the water. The arrangement is generally considered commensal as it is done at no cost or benefit to the host.

[#548] The most abundant greenhouse gas in the earth's atmosphere:
Correct Answer

(C) Water vapour (H 2 O)

Explanation

Solution: Water vapour (H 2 O) is the most abundant greenhouse gas in the earth's atmosphere.

[#549] Frost forms when:
Correct Answer

(D) All of the above

Explanation

Solution: Frost forms when an outside surface cools past the dew point. The dew point is the point where the air gets so cold, the water vapour in the atmosphere turns into liquid.

[#550] A narrow valley with steep sides is known as
Correct Answer

(A) Gorge

Explanation

Solution: A narrow valley with steep sides is known as Gorge.