Can u guys help me with this "Vocabulary and Concept Check".
i'll give u a brainllest crown

The GCF is the greatest factor that divides two numbers

Explanation:

2)

1. List the prime factors of each number.

2. Circle every common prime factor — that is, every prime factor that's a factor of every number in the set.

3. Multiply all the circled numbers. The result is the GCF.

and that is all I know I don't necessarily understand number 3

the answer is b

explanation:

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.