Answer:
Ozone
Explanation:
Ozone is considered a pollutant in the troposphere, but in the stratosphere it is essential to life on earth because it absorbs biologically harmful UV radiation. The mesosphere and the thermosphere are two additional atmospheric layers above the stratosphere.
Answer:
maybe do B, not all of the same water molecules travel with the same wave
Explanation:
<span>XX is the genotype. think of it this way;;
if you got a y, you're a guy.
it rhymes.
males are XY.</span>