Limits on mountaintop removal mining were removed by the Bush administration in the late 1990s when
A) regulations on the use of coal in power plants were lifted, increasing the demand for coal.
B) large regions of national forest were reclassified as national reserves, permitting coal mining.
C) the mountain top debris was reclassified from waste to fill, allowing it to be dumped into valleys.
D) laws changed, permitting the relocation of people and homes in the surrounding regions.
C
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Which is the correct order of natural regions from north to south?
A) tundra, taiga, steppe, desert B) forest steppe, tundra, taiga, steppe C) deciduous, forest steppe, tundra, taiga D) desert, tundra, steppe, taiga
Early explorers in the polar regions often reported seeing mountains that didn't really exist. They probably were witnessing ________ instead
A) the glory B) inferior mirages C) looming D) Fata Morgana
In polar areas
A. as ice melts, water's salinity increases, density decreases. B. as ice forms, water's salinity decreases, density increases. C. as ice melts, water's salinity increases, density increases. D. as ice forms, water's salinity increases, density increases.
Water transported shoreward in the surf zone is returned seaward by ________.
A. shallow water waves B. refracted waves C. rip currents D. internal waves E. reflected waves