Which of these is the longest-lasting sink for CO₂?
A)plant tissues and cellulose (the "woody" parts of plants)
B)the atmosphere
C)air bubbles within glacial ice
D)limestones

Question

Quizplus · Accepted Answer

Limestones are the longest-lasting sink for CO₂ as they can hold on to it for hundreds of millions of years, slowly releasing it through geological processes like weathering. Plant tissues and cellulose eventually decompose, the atmosphere exchanges gases with other sources, and air bubbles within glacial ice gradually dissolve.

Which of These Is the Longest-Lasting Sink for CO₂