Ozone thinning is
A. greatest in the Northern Hemisphere in October.
B. evenly distributed for most of the year.
C. greatest in the Southern Hemisphere in April.
D. more pronounced in Antarctica than the Arctic.
Answer: D
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A risk is
A. something that is always to be avoided. B. involves a biological or chemical hazard. C. a lifestyle choice. D. the probability of suffering harm from a hazard E. is inherently transmissible.
Suppose at your home in the northern hemisphere the surface wind is blowing from the northwest. Which of the following directions relative to your home will have the region of lowest pressure?
A. south B. east C. north D. west
One of Edwin Hubble's discoveries is that the known universe is expanding. This means that
A) most all observable galaxies are moving away from each other. B) light rays bend as they near the event horizon of a black hole. C) light rays undergo acceleration as they travel vast distances. D) the mass of the universe is slowly dissipating.
Saying that the ocean is buffered means that it: a. can't get too acidic or too alkaline
b. is alkaline. c. is neutral. d. is acidic.