Which of the following are the factors that cause variation in the amount of insolation on the Earth ? 1. Rotation of the earth on its axis 2. Length of the day 3. Distribution of land and water on the earth Select the answer using the code given below :
- A. 1 only
- B. 1 and 2 only ✓
- C. 2 and 3 only
- D. 1, 2 and 3
Correct Answer: B. 1 and 2 only
Explanation
Rotation of the Earth, angle of inclination, and length of day are key factors causing variations in the amount of insolation received. Distribution of land and water affects surface heating and absorption, but not the raw insolation amount received by Earth.
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