Which of the following could have been components of membranes covered pre-cells in ancient earth

lipid- protein.

Hope this helps!

-Payshence

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.

this is a good question! i'll do some research and come back when i have the answer!