Ground level<span> or "bad" </span>ozone<span> is not emitted directly into the air, but is created by chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC) in the presence of sunlight.</span>
Heterozygous, because there are two different alleles for one trait.
Good: humans aren't asexual, people cant make a baby with self
Bad: Humans sexually reproduce when it is not wanted, unplanned
The crust is the outermost layer of the planet