is an accessory organ that produces enzymes that aids in the digestion of all macronutrients

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.

the correct answer is - ability to find a mate

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.

not sure if this is what you'r looking for nnew= nold