Which of the following gives the name for the small, smooth cloud that may form just above the top of a towering cumulus cloud?
A. banner cloud
B. contrail
C. mammatus cloud
D. pileus cloud
Answer: D
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Before a hurricane forms, upper-level divergence above an easterly wave
A) pulls moisture into the system. B) causes the system to dissipate. C) moves west to east. D) weakens vertical convective circulation.
Proponents of sustainable development argue that
A. Development is less important than the environment B. Development can proceed with minimal costs to the environment C. All development has environmental costs D. Development does not cause environmental damage E. The environment is less important than development
Why can non-native plantings on dunes be counterproductive in protecting beaches?
a. ?Non-native plants rarely survive in beach environments. b. ?Non-native plants can require artificial watering, leading to a rise in the water table and gully formation. c. ?Non-native plants can block the wind from moving the sand to and from the dunes. d. ?Non-native plants can overtake the dunes, covering most of the sand, and require frequent cut-back. e. ?Non-native plantings can change the soil acidity, making the sand more likely to blow away.
Black smokers emit water in excess of 350 degrees Celsius, but release water rather than steam. Why is this so? (Water normally turns to steam at 100 degrees Celsius)
a) The water surrounding the smokers cools down the emitted water b) The boiling point of water is much higher where black smokers occur due to higher pressure c) The benthic life associated with black smokers prohibits the water from vaporizing d) None of the above