Asteroid hormone reaches its target cell. which event happens next?
a. it binds itself to the receptors on the surface of the cell membrane, which activates enzymes inside the cell.
b. it passes through the cell membrane and attaches itself to a receptor protein inside the cell.
c. it passes on the signal to the secondary messengers inside the cell, which activate the receptors on the cell membrane.

B. It passes through the cell membrane and attaches itself to a receptor protein inside the cell.

Explanation:

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.

is this a psat question, if so do not cheat try your best.