Question 1 --> The answers are A, B and C.
A. The amount of energy lost due to evaporation at the poles.
In the passage, it is mentioned that "less solar energy is lost in evaporation at the frigid poles than in the tropics." This implies that the amount of energy lost due to evaporation is a factor contributing to the temperature swings in Earth's polar regions. Therefore, option A is correct.

B. Soil exposure due to melting snow.
The passage states that "most of the Arctic is covered in snow and ice, which are highly reflective; if snow and ice melt, the exposed soil, which absorbs heat, serves to accelerate warming." This indicates that when snow and ice melt, exposing the soil, it contributes to temperature swings. Hence, option B is correct.

C. The relatively thin atmosphere at the poles.
The passage mentions that "the polar atmosphere is thin, so little energy is required to warm it." This implies that the thin atmosphere at the poles is a factor leading to temperature swings. Therefore, option C is correct.


Question 2 --> The answer is C.
C. "There might be a reversal of the temperature trend in the high latitudes of Greenland."
This option aligns with the idea that skeptics are pointing to temperature changes in Greenland, and they might be suggesting the possibility of a reversal of the temperature trend in this specific region. It suggests that the skeptics are questioning whether the observed temperature decrease in Greenland might indicate a potential reversal of the broader trend of increasing temperatures in that specific location.