The global energy issue derives in part from the fact that fossil fuels
A) are distributed uniformly across Earth.
B) are renewable energy sources.
C) were formed in the far distant past.
D) have an infinite supply.
E) are too easily contaminated.
Answer: C
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The seasonality of temperature for Dfa and Dfb climates can best be explained by
A) proximity to water bodies and increasing variation in solar insolation. B) proximity to water bodies and decreasing variation in solar insolation. C) being away from water bodies and increasing variation in solar insolation. D) being away from water bodies and decreasing variation in solar insolation.
In hilly areas, in which of the following places does cold air typically collect?
A. on vegetated hillsides B. in valleys C. on bare hillsides D. on hilltops
China's large population has traditionally been supported by
A. a millet-based agricultural system. B. fertile alluvial soils and adequate water for the cultivation of staple cereals. C. an abundance of minerals such as coal. D. the growth of urban areas.
The conditions of the deep ocean?the eternal darkness, the cold, hypersaline water, and the high
pressure?limits the extent of deep-ocean floor communities Indicate whether the statement is true or false.