How would i know if yall give the write answer on

because or at least a can

Explanation:

there isn't a true way, but if you look at someone's profile and see how many people that person helped and people thanked him than that can be a good way to know

Explanation:

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.