Can anyone read carefully and answer this for me i need

Answer 1:

A type of molecule that keeps everything in place.

Answer 2:

proteins

The molcule that Keeps everything together. And different types of proteins

Hope this helped!!

significant amounts of nitrogen oxides, carbon monoxide, and other pollution

explanation:

passenger vehicles are a major pollution contributor, producing significant amounts of nitrogen oxides, carbon monoxide, and other pollution. in 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air.

carbon atoms, hydrogen, oxygen, and nitrogen.