Air is made of gaseous elements and compounds that interact but are not bound to each other. So air can be considered a

this website is for anybody really not just for girls just saying, also while a lot of males are mean and you know there are the few who are kind and then there's the nice-guys but then theirs also guys like me who are shy we don't get out much because there are people like you who exist who would most likely punch a guy in the face so next time just think about things before you post them to a website where guys and girls can see your question.

"d.) carbon dioxide and hydrogen sulfide"

looks like the answer is     c     to me!

b) the inside picture would look at a very high temperature in a very low ph