Why is: Science questions help.?

Question

Why is:

1. Th primary cause of winds is the unequal heating of the Earth's atmosphere.

2. The wind speed between two nearby locations is affected most directly by differences in the air pressure between the locations.

3. Why is it possible for no rain to be falling from a cloud - The water droplets are too small to fall.

Answer 1

2. the wind speed between two locations change because winds travel from high pressure to low pressure

3. it is possible because rain is water condensing on dust particles and if they are small enough updrafts keep them afloat in the air. when they get to heavy they fall from the sky.