The correct answers is:
is formed when fuel is burned at high temperatures
Nitrogen dioxide is another toxic gas that forms when fuels are burned at high temperatures.
is the most abundant gas in the atmosphere
The most abundant gas is nitrogen. Over 78 percent of the air we breathe is nitrogen (N)
can cause acid rain
Both nitrogen dioxide and sulfur dioxide can cause acid rain. The damage done by acid rain is devastating to the plants and animals in an ecosystem.
is a major pollutant in the air
AQI measures five major pollutants, including carbon monoxide, nitrogen dioxide (NO2), and sulfur dioxide (SO2).
Wrong answers:
is a waste product of photosynthesis
The waste product of photosynthesis is oxygen.