Surface mining is ________ dangerous than underground mining, it is also ________ environmentally damaging
Fill in the blank(s) with correct word
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Which of the following is an accurate statement about the Antarctica ozone hole?
A. It is similar in intensity to the hole found over the Arctic region. B. It had nearly disappeared in the 1990s. C. It is associated with the formation of polar stratospheric clouds. D. It is located in the upper troposphere.
Regarding vorticity, it is true that
A) relative vorticity is always conserved. B) counterclockwise rotation in the Northern Hemisphere has positive vorticity. C) Earth vorticity decreases with latitude. D) vorticity changes in the upper troposphere do not affect surface pressures.
The rate at which saturated air cools with adiabatic ascent is
A. 8.3°C/km. B. variable depending on temperature. C. 3.3°C/km. D. 10°C/km.
Which is least likely to be a condition conducive to the formation of hurricanes?
a. a region of converging surface winds at the surface b. warm water c. strong upper-level winds d. cold air aloft e. moist, humid surface air