Cells- Do you think sloths are unicellular or multicellular? Why?

unicellular means one cell, and multicellular is multiple cells. just look at the prefixes and suffixes and the answer will be obviously apparent

if you do this and still don't know the answer, then learn the definition of a multicellular organism.

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.