ISEE Reading Question 163: Answer and Explanation

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Question: 163

2. Which of the following most strongly affects the upper atmosphere?

  • A. Lack of oxygen
  • B. Seasonal changes
  • C. Air pressure
  • D. Heat of the sun

Correct Answer: D

Explanation:

The correct answer is (D). The first paragraph makes clear that the temperature (the heat of the sun) directly affects many other measures and dimensions in the upper atmosphere.

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