Only a few meters across, ____________________ ____________________ form on hot and sunny days in Arizona
Fill in the blank(s) with correct word
dust devils
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The amount of irrigated land used to produce food crops has increased since 1950 . It can also be said that:
a. The amount of irrigated land per person has increased since 1950 b. The amount of irrigated land per person has decreased since 1950 c. The amount of irrigated land per person has stayed the same since 1950 d. The amount of irrigated land per person for this time period is not known e. The amount of irrigated land per person has increased in some areas and decreased in others
The Gender Inequality Index in East Asia is comparable to that of developed regions
Indicate whether the statement is true or false.
Current levels of atmospheric carbon dioxide are
A) remaining high but steady. B) nearly 400 ppm, higher than they have been in 800,000 years. C) fluctuating greatly but are starting to increase again after a downward trend in the 1990s. D) decreasing because surplus carbon dioxide is being absorbed by the arctic permafrost.
An inversion represents an extremely stable atmosphere because air that rises into the inversion will eventually become ____ and ____ dense than the surrounding air
a. warmer; less b. warmer; more c. colder; less d. colder; more e. warmer; similarly