Which statement about mixtures and solutions is incorrect?
a) some mixtures are solutions.
b) all solutions are mixtures.
c) no solutions are mixtures.
d) mixtures and solutions are always the same thing.

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.

hi my dude or dudette

wher is the rest of the question