<span>The three events occur during sexual reproduction is Crossing over, independent assortment of chromosomes, and fertilization that sexual reproduction rearranges existing alleles into fresh combinations each generation, providing much of the genetic variation that makes evolution possible.</span>
Cheetah<span>The fastest animal in the world is of course the cheetah.</span>
They showed how organic molecules could be made from Earth's early atmosphere.
They develop on the undersides of leaves.