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GOING TO EXTREMES: Answers to Viewer Challenge |
SPIDER CANYON
- 1. The female funnel web spider senses vibration patterns of the prey when it touches her web.
- 2. (b.) The hybrid spider offspring of aggressive males from the desert and the less aggressive spiders from the river are super-aggressive.
FROZEN ALIVE
- 3. Antifreeze proteins in its blood enables the winter flounder to survive the cold temperature of sea water.
- 4. (a.) Glucose enables the wood frog to freeze and thaw.
ULTIMATE SPEED
- 5. (d.) When the cheetah is running, it gets extra power from energy stored in its back.
- 6. The cheetah is a sprinter and is anaerobic. The pronghorn is a long-distance runner with great endurance and is aerobic.
HIDDEN DEPTHS
- 7. "Marine snow" is made of junk, detritus and dust from the upper layer of ocean that drifts down.
- 8. (a & d.) The ocean at the middle depths contains low levels of oxygen and light.
HIGH ANXIETY
- 9. (c.) The air at high altitudes causes problems for climbers because it
contains less oxygen.
- 10. Night is the most dangerous time on the mountain for climbers susceptible to altitude sickness.
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Scientific American Frontiers
Fall 1990 to Spring 2000
Sponsored by GTE Corporation,
now a part of Verizon Communications Inc.
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