Under what conditions does light and fluffy snow form?
A) warm air and high humidity B) cold air and low humidity
C) cold air and no humidity D) warm air and low humidity
B
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Which of the following is an artificial compound that acts as a greenhouse gas?
A) Methane B) Chlorofluorocarbons C) Carbon dioxide D) Nitrous oxide
Which of the following is CORRECT regarding soil color?
A) Soil color is a relatively unimportant physical property of soil. B) Dark soils always indicate high organic content. C) Color reflects composition and chemical makeup of a soil. D) Soil color is used solely to determine the moisture content of soil—darker soils have a higher moisture content, whereas lighter soils have less water content.
The carrying capacity is the ________
A) maximum sustainable population that a given environment can support B) limitation on numbers of species in a community C) greatest number of different niches possible in a given area D) average number of offspring carried to term by a species E) potential growth in the number of species in a given area
Which of the following terms refers to clouds that have a characteristic lens-shaped appearance?
A. lenticular B. contrail C. banner clouds D. mammatus