What do plants do to maintain homeostasis? a
respond to stimuli like water, sun, gravity and touch
b
reflect green light
c
produce flowers
d
change the food they make

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 index of refraction of the second medium is higher. i just took the test trust me !

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explanation:

b r

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