The Grizzwells by Bill Schorr for May 06, 2014
May 05, 2014
May 07, 2014
Transcript:
PP: heres another one...If pears are pear shaped, what are apples? GG: Obviously either fruit ir a vegetable. PP: aha! A fruit if vegetable what? GG: I dunno salad?
Apples are apple-shaped. And oranges are orange because the skin produces beta-carotene and the amount of chlorophyll drops in response to cooler temperatures and less sunlight (same reason leaves turn color), or because of exposure to ethylene gas, which ripening fruits emit to sync up with their neighbors. It’s thought the orange color is an adaptation to speed seed dispersal before a frost, but I doubt that.