Question
Which processes occur in an ecosystem?
I. Biomass increases in each successive trophic level.
II. Inorganic nutrients are recycled.
III. Chemical energy is stored in carbon compounds.
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
▶️Answer/Explanation
Ans:
C
Question
The global carbon cycle involves sinks where carbon is stored, and fluxes where carbon is transferred. What are the largest sink and flux?
▶️Answer/Explanation
Ans:C
Question
The diagram shows the carbon flux in gigatonnes per year between some of the Earth’s global reservoirs.
What can be deduced from the information in the diagram?
A. Arrows \(S\) are mainly due to respiration of marine plants and animals.
B. Photosynthesis is a component of both arrows \(Q\) and \(S\).
C. Every day, more carbon is removed from the ocean than is added.
D. Ocean carbon is stored as dissolved calcium carbonate.
▶️Answer/Explanation
Ans:
B