Chlorofluorocarbons (CFCs):
a. have never been very abundant
b. bind oxygen atoms together creating ozone.
c. do no harm to the atmosphere.
d. contain chlorine atoms that can destroy ozone (O3) by converting it to oxygen (O2).
d
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Between which planets is the asteroid belt found?
A) between Mars and Jupiter B) between Earth and Mars C) between Earth and Venus D) between Jupiter and Neptune
Weathering processes create sediment and _____
a) soil b) metamorphic rock c) igneous rock d) water e) oil
mP air masses
A) are colder than cP masses. B) are drier than cP masses. C) can produce northeasters on the Atlantic Coast of North America. D) rarely affect North America.
Streams with perennial flow continue to receive water between storms because of:
a. aquicludes. b. traction. c. peak flow. d. flood crests. e. base flow.