How do clouds form?
will give

Clouds are formed when water particles (droplets) rises up into the atmosphere until they collect so much it turns into a cloud!!!

Have a wnderful day

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

58750.08068 is the answer i think