A zebra’s stripes act as camouflage in several ways. The stripes’ vertical orientation help zebras to hide in grass (keep in mind that lions are color blind). Also, a group of zebras standing close together may look like one large animal to a predator, making it more difficult to select a particular zebra to attack. (Thanks to Douglas Adams of Concord, Calif.)

Memphis, Tenn., on the Mississippi River, is the home of Graceland, Elvis Presley’s estate, and has a rich musical heritage. The correct term for a resident of Memphis is:

A) Memphisite

B) Memphite

C) Memphisser

D) Memphian

Wednesday’s answer: “Anti-G suit” is another term for the G-suit worn by pilots and astronauts. “Anti-G suit” is the more correct term, since it counteracts the effects of high gravitational forces.