The recent gradual rise in the Earth's average surface temperature is commonly referred to as
A) global warming
B) the greenhouse effect
C) ozone depletion
D) global heating
Correct Answer:
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Q41: According to optimistic estimates, the end of
Q42: Long-term data on global carbon dioxide levels
Q43: As the average surface temperature of the
Q44: Compared to today, in the future, the
Q45: The atmospheric carbon dioxide concentration
A) is higher
Q47: Today, global average temperatures are estimated using
A)
Q48: Over the last century, global average temperatures
Q49: Why does the Sun brighten with time?
A)
Q50: When the Sun ejects its outer layer
Q51: When the Sun becomes a red giant
A)
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