What is animal classification? Grouping animals that only have bonès
Memorizing the names of different animals
Putting animals into groups depending on how they are alike
Going to a class to learn about animals

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.

wha is what i will use to get my free points