When did the current warming trend observed on Earth start?

A. about 500 years ago
B. about 100 years ago
C. about 1,000 years ago
D. about 10,000 years ago


Answer: B

Environmental & Atmospheric Sciences

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Seasons are a result of ________

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Sugar production in Hawai'i has declined since World War II because of ________

Fill in the blank(s) with correct word

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