Sir Isaac Newton invented gravity. The law of gravity says no fair jumping up without coming back down. Galileo showed that the earth was round and not vice versa. He dropped his balls to prove gravity. Mare Curie did her research at the Sore Buns Institute in France.
Men are mammals and women are femammals.
Proteins are composed of a mean old acid. The largest mammals are to be found in the sea because there is nowhere else to put them. Involuntary muscles are not as willing as voluntary ones. Methane, a greenhouse gas, comes from the burning of trees and cows. The spinal column is a long bunch of bones.