Question

give reason
water vapour always rises up.
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Answer 1

Answer:

As we said, clouds form in the atmosphere because air containing water vapor rises and cools. The key to this process is that air near the Earth's surface is warmed by solar radiation. ... Generally, air pressure, is the reason.

Answer 2

Answer:

As we said, clouds form in the atmosphere because air containing water vapor rises and cools. The key to this process is that air near the Earth's surface is warmed by solar radiation. ... Generally, air pressure, is the reason.

Explanation:

If the vapour you mean is water vapour, then the main reason it goes up is because water vapour is approximately 1.5 times lighter than air and just like how an helium balloon rises up in air, it rises up.

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