Which one is correct?

6 CO2 molecules.

Explanation:

In photosynthetic reactions, glucose is formed by 6 CO2 and 6 H2O molecules.

6 CO2 + 6 H20 to form C6H12O6 + 6O2 +ATP

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.

answer; i believe that the correct answer is ; males are hemizygous for the x chromosome;