Natural Carbon "Sinks" (Processes That Take CO₂ from the Atmosphere,such

Multiple Choice

Natural carbon "sinks" (processes that take CO₂ from the atmosphere,such as the chemical weathering of rocks,the growth of vegetation,and the solution of atmospheric CO₂ into the oceans) appear to have generally matched the production of CO₂ until ____________.

A) the end of the last ice age,approximately 16,000 years ago
B) the Little Ice Age,approximately 400 years ago
C) approximately 1900
D) the Eocene,approximately 50 million years ago