A
A natural or artificial reservoir that absorbs and stores more atmospheric carbon dioxide than it releases.
B
An industrial facility designed exclusively to emit carbon dioxide into deep geological strata.
C
A legislative mechanism used to trade carbon emission credits among developing nations.
D
A marine trench where oceanic carbon is permanently trapped in solid ice formations.
Correct answer: (a) A natural or artificial reservoir that absorbs and stores more atmospheric carbon dioxide than it releases.
Explanation
Option A is the correct definition of a carbon sink as a reservoir that absorbs and stores more atmospheric carbon dioxide than it releases. Options B, C, and D provide inaccurate definitions.
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