Atmospheric greenhouse gases cause the greenhouse effect by
A) degrading the natural atmospheric filter against incoming solar energy
B) absorbing heat energy from ultraviolet rays produced by the sun
C) depleting the heavy isotope of oxygen (18O) from air at the poles
D) preventing the escape of radiant heat from Earth's surface into space
Correct Answer:
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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
Q5: Which proxy indicates a past period of
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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