Question

Give reasons:

1) Humid air is lighter

2) Pressure decreases with altitude


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Answer 1

Answer:

2) pressure decrease with altitude

Answer 2

Answer:

1) We all know that warm air is lighter than cold

air. Humid air is always warm, so humid air is

lighter.

2) As we go upwards the molecule in the air

decreases. Hence, the air becomes less dense.

So the air ultimately is lighter. And the lighter

air has decreased pressure

Explanation:

Hope it helps you