Which collision is more damaging; driving into a cement wall with no "give," or colliding head-on with an identical vehicle moving toward you at your same speed?
A. Collision with the car.
B. Collision with the wall.
C. both the same.
D. no way to say
Answer: C
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Which process decreases the amount of carbon dioxide in the atmosphere?
A. respiration B. photosynthesis C. combustion D. decomposition E. aerobic respiration
Which statement about the precautionary principle is accurate?
A. Manufacturers of chemicals in the U.S. strongly object to passing new laws that would apply the precautionary principle. B. Manufacturers of chemicals in the U.S. strongly favor passing new laws that would broadly apply the precautionary principle. C. Environmental scientists believe that the precautionary principle is scientifically unsound and without merit. D. The average U.S. citizen is quite knowledgeable about the precautionary principle and wants it to apply to all new chemicals.
When the Moon assumes its characteristic thin crescent shape, the position of the Sun is
A. at right angles to the line between the Moon and Earth. B. almost directly in back of the Moon. C. almost directly behind the Earth, so Earth is between the Sun and the Moon.
The only herbivorous marine mammal is a ________.
A. sea lion B. seal C. grey whale D. manatee E. sea otter