Which of the Following Is Accepted as the Single Causal

question 126

Multiple Choice

Which of the following is accepted as the single causal mechanism for the Pleistocene climate changes?

• A) changes in the amount of atmospheric carbon dioxide
• B) changes in Earth's orbit
• C) changes in the positions of the continents
• D) changes in the solar radiation received by Earth
• E) None of the above is widely accepted.

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