Answer:
Ozone
Explanation:
In the stratosphere, ozone is created primarily by ultraviolet radiation. When high-energy ultraviolet rays strike ordinary oxygen molecules (O2), they split the molecule into two single oxygen atoms, known as atomic oxygen.
protozoa
because a mollusks,insects and worms are in the insecta kingdom
4440 hope this helps
c) the F1 generation
is the answer
