Acasta Asteroid Impact Can you stop thinking Lucy /Australopithecus africanus Swing A fence Letter boxes A tree.... Flower of Crab apple Darwin Overcrowing Trees Georges Cuvier 1769-1832 Mango, banana, Tangerine.... Figure 18.1 Humans are Strange creatures Above the clouds Beagle Monstera Five lobes ~ Monstera Figure 15.7 Figure 14.1