How Have Global Temperatures Changed Over the Last 800,000 Years

question 18

Multiple Choice

How have global temperatures changed over the last 800,000 years?

• A) They have been constant.
• B) They have been increasing.
• C) They have been decreasing.
• D) They have increased and decreased many times.
• E) There is no way to know how global temperatures have changed with our current knowledge.

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