1 A) oxygen B) carbon dioxide C) methane D) ozone 2 A) troposphere, thermosphere, mesosphere, stratosphere B) thermosphere, stratosphere, troposphere, mesosphere, C) mesosphere, thermosphere, stratosphere, troposphere D) thermosphere, mesosphere, stratosphere, troposphere 3 A) thermosphere B) ozone layer C) tropopause D) troposphere 4 A) Stationary fronts B) Weather fronts C) Cold fronts D) Warm fronts 5 A) six, four B) three, four C) four, three D) two, four 6 A) counterclockwise B) clockwise C) north D) south 7 A) counterclockwise B) clockwise C) south D) north 8 A) biosphere B) lithosphere C) hydrosphere D) atmosphere 9 A) continental climate B) maritime climate C) Coriolis effect D) increase in trace gases 10 A) El Niño B) La Niña C) Coriolis effect D) Alberta Clipper
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