Which proxy indicates a past period of warmer global climate?
A) coal deposits
B) ice cores with more 18O (heavy isotope)
C) glacial sediments
D) None of these are correct.
Correct Answer:
Verified
Q1: Select the event that marks the beginning
Q2: The geothermal gradient is due to
A) decaying
Q3: Proxies are used to
A) directly measure temperature
B)
Q4: Select the example of a proxy indicator
Q6: Atmospheric greenhouse gases cause the greenhouse effect
Q7: The Milankovitch cycles involve changes in
Q8: Volcanic eruptions
A) release dark soot particles with
Q9: Which is the most significant greenhouse gas
Q10: Most methane emissions arise from
A) animal digestive
Q11: In a computer model that is tested
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