At the 500 mb level, the amount of oxygen inhaled in a single breath is __________ of that
inhaled at sea-level.
a. about the same
b. about one-quarter
c. about one-half
d. about three-quarters
c
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Which of the following phenomena are exemplified by the "smoke" of the Great Smoky Mountains and the "blue" of the Blue Ridge Mountains?
A. sundogs B. haze C. halos D. glories
If you take a ride in the International Space Station you'll experience weightlessness due to
A. no inertia in space. B. rotation of the station. C. the absence of a support force. D. the absence of Earth gravity.
What processes cause rivers to erode incised valleys and canyons?
What will be an ideal response?
Avalanches _____
a. deposit raised rims, called levees b. are a type of slow mass wasting c. move along a curved slip plane d. move as a cohesive unit e. can consist of debris