7. which statement about scientific consensus is true?

a. it represents the beliefs of most scientists.
b. it is the only way to prove a theory true.
c. it is necessary to form a hypothesis.
d. it is an assurance that the interpretations of a study are correct.
e. it is necessary before research can be published in a science journal.

A. It represents the beliefs of most scientists.

Explanation:

I got it correct in my test :)

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.

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.