Some people believe the sun has become hotter and is responsible for global warming. Which observation shows that claim to be false?
A. The stratosphere cools while the troposphere warms.
B. The surface temperature of the sun is projected to increase.
C. Air currents at high altitude cool the sun.
D. Ocean currents increase the water's ability to absorb heat.
E. Air currents at low altitude cool the sun.
Answer: A
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