Earth's climate over the last three million years is best characterized by: A. Persistent global warming. B. Both ice ages and interglacial periods. C. Alternating glacial and interglacial periods. D. Warmer-than-average temperatures throughout geologic time.
Geography · High School · Wed Jan 13 2021
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The Earth's climate over the last three million years is best characterized by:
C. Alternating glacial and interglacial periods.
- During this period, the Earth experienced cycles of glacial periods (ice ages) and interglacial periods. These cycles involved shifts between colder periods when large ice sheets covered parts of the planet (glacial periods) and warmer periods with receding ice and higher global temperatures (interglacial periods).
- This pattern of alternating glacial and interglacial periods is commonly referred to as the Pleistocene Epoch, which encompasses the past 2.6 million years.