Which gas is most abundant in the atmosphere?

argon

oxygen

carbon dioxide

nitrogen
Btw this is a science question

5. to comply with implementation requirements, shops must ensure that paint booth exhaust systems use efficient spray booth filters. a) 75% b) 100% c) 50% d) 98%

Which is an advantage to using nonrenewable resources? a. they can be cheaper. b.they can have a lower impact on the environment. c.they can be used up rapidly. d.they can contribute to global warming.

Essay questions may also be referred to as a. talk questions c. hard questions b. explain questions d. think questions