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Clouds form when moist, warm rising air cools and expands in the atmosphere. The water vapor in the air condenses to form tiny water droplets which are the basis of clouds.... here is a picture.... and i have no clue what im talking about...Many people wonder what causes these beautiful clouds in the sky to form. Condensation plays a significant role in the formation of clouds. Clouds are formed when air containing water vapor is cooled below a critical temperature WE CALL THAT the dew point. yeah you lost yet I AM.The resulting moisture condenses into droplets on microscopic dust particles (condensation nuclei) in the atmosphere. The air is normally cooled by expansion during its upward movement. Upward flow of air in the atmosphere may be caused by convection resulting from intense solar heating of the ground. and thats your answer...if your confused then dont be afraid to ask.place you questions and concerns in the comments area. i cant guarantee that i will respond but i will do my best to get back to you. you may contact me at 404-741-1047. have a great day

Clouds are a cotton like big structure made up of water drops, ice crystalline, that floats in the sky.
The correct option is:
(a) Moist air moves up as it encounters a mountain range.
Formation of clouds
- Clouds form when invisible water vapor condenses into visible water droplets.
- Formation of clouds comes under the process water cycle.
Thus, when the moist air moves up and cool down, it constitutes clouds.
Option (a) Moist air moves up as it encounters a mountain range is correct.
To know more about clouds, visit here:
https://brainly.com/question/1176518