C) Help with plant defense.
Many species are known to eat many plants, including flowers. To avoid being eaten, thorns in a rose bush help defend itself.
According to the Big Bang theory, the universe was once very dense and is now expanding.
I believe it is either B or A, personally i'm leaning towards B, but at the same time, i don't think that we would be obtaining materials via pollination, so it then causes A to make more sense.
Lipids have no polymers.
A lipid is formed when a glyceral combines with one or more fatty acids.
I believe its aerobic respiration
