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

Question

Quizplus · Accepted Answer

Carbonate minerals in limestones are the longest-lasting sink for carbon dioxide, as they can remain in solid form for millions of years. Plant tissues and cellulose can decompose relatively quickly, the atmosphere can release CO2 through natural processes, and air bubbles within glacial ice can eventually melt and release the trapped CO2.

Which of These Is the Longest-Lasting Sink for Carbon Dioxide