Which of the following is a cost of recreational activities?

a. economic growth

b. exercise

c. social interaction

d. noise

answer:

c soical interaction

explanation:

bc look at it it is 2 of them b and c but i looked it up to see if im right so i can give the right answer

answer:

hey wtd? ?

explanation:

answer; i believe the correct answer is ( proteins );

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.