Moderate
The air density is maximum:
Correct answer: B. At the soil surface
- A. Above 32′
- B. At the soil surface
- C. Between 32′ - 64′ from soil level
- D. In the hydrosphere
Explanation
Air density is greatest at the soil surface because atmospheric pressure is highest there due to the weight of the overlying air. It decreases with increasing altitude.
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