Tropospheric ozone forms when
A) sunlight causes NO2 to photodissociate.
B) SO2 reacts with particulate matter.
C) NOx reacts with ammonia (NH3).
D) carbon dioxide is released into the atmosphere from fossil fuel combustion.
A) sunlight causes NO2 to photodissociate.
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Geologists from which continent were initially the least receptive to the continental drift hypothesis?
a. North America b. Antarctica c. Africa d. Australia e. South America
Choose the Moon position that would cause high tide in North America (North America is on the sunlit side of the globe).
A. Position 1 B. Position 2 C. Position 3 D. Position 4 E. Position 5
Which of the following is most true regarding the Big Bang Theory?
A. It resulted from the ignition of an enormous concentration of hydrogen gas. B. The theory has been disproved in recent years. C. The universe began expanding from a single point about 14 billion years ago. D. The theory applies only to the Milky Way Galaxy. E. All of the matter in the universe was created in an instant.
Which environmental sphere generally includes the inorganic minerals of Earth’s surface?
A. atmosphere B. hydrosphere C. cryosphere D. biosphere E. lithosphere