Which form of fog results from two unsaturated air masses combining horizontally?
A. upslope fog
B. evaporation fog
C. radiation fog
D. mixing fog
Answer: D
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Which of the following is a recent human impact on the nitrogen cycle?
A) the Haber-Bosch process B) nitrogen mining C) introducing legumes into plant rotation D) biological nitrogen fixation E) bacterial nitrification
In developed countries, many national parks are in danger
A. due to excessive logging. B. due to poaching. C. of becoming habitat islands due to surrounding development. D. of becoming biodiversity hot spots. E. due to land for debt swaps.
Which of the following energy forms is high quality?
a. Coal b. the heat dispersed in the ocean c. Electricity d. Food e. coal, electricity and food
Pollution cleanup is considered a short-term solution if population and consumption levels grow without corresponding improvement in pollution control technology
Indicate whether the statement is true or false