If a molecule is polar, what is true about the distribution of its valence electrons?

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.

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )

the answer would be a

i don,t know so just answer mine