Darwin's next insight was to compare process in nature to artificial selection. By doing so, he developed a scientific hypothesis to explain how evolution occurs. This is where Darwin made his contribution and his strongest break with the past.

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

Im is in a crowd of people at the mall looking for his girlfriend tammy, who was supposed to meet him for dinner. jim realizes tammy is across the room as he catches a whiff of her overpowering perfume, 'paris #6'. which process explains why jim is able to smell the perfume?

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?