Which of the following factors is biotic?

it’s food i have to have 20 characters so

Biotic factors are the living components of an ecosystem.

I believe the correct answer is C food. Food meaning plants, berries, and living consumable organisms.

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.