Answer:
Most of the nitrogen oxides released in the U.S. due to human activity are from the burning of fossil fuels associated with transportation and industry. When fossil fuels are burned, they release nitrogen oxides into the atmosphere, which contribute to the formation of smog and acid rain.
Explanation:
<span>Recent studies strongly indicate a genetic link for schizophrenia. People with genes that don't support healthy brain synapses have shown a higher risk for becoming schizophrenic.</span>
The disk part of the galaxy.