Ozone (O3 ) in the lower troposphere
A) damages biological tissues, with children at particular risk.
B) is important for protecting Earth's surface from harmful ultraviolet radiation.
C) is not associated with transportation.
D) forms acid rain.
E) has not been found to cause any damage to crops and plants.
A
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Carcinogens may be difficult to identify because ________
A) there is no way to measure the carcinogenic potential of a substance B) they are the least common toxicants C) there is a long lag time between exposure to the agent and disease D) they are rare in nature E) most are invisible
Voltage can be induced in a wire by
A. changing the current in a nearby wire. B. moving the wire near a magnet. C. moving a magnet near the wire. D. all of the above
What theory proposes that the same processes seen today have operated throughout geologic time (i.e. the present is
the key to the past)? a. conformitarianism b. inclusion c. fossil succession d. uniformitarianism e. evolution
Why is mountainous terrain a poor source region for air masses?
What will be an ideal response?