Natural Carbon Sinks Have Generally Matched the Production of Carbon

question 51

Multiple Choice

Natural carbon sinks have generally matched the production of carbon dioxide 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 Epoch,approximately 50 million years ago

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