Where would you see water only after a heavy rain?

plz help me

Wadi

Explanation:

Wadi is a riverbed that has water only after heavy rain.

Hope this Helps!!

:D

gas

explanation:

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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.