________ use mirrors to concentrate the sun's rays on a series of pipes, which heats fluid inside the pipes to boiling, producing steam. The steam is then used to spin a turbine and generate electricity

A) Passive solar technologies
B) Solar photovoltaic farms
C) Biofuels
D) Concentrating solar power systems
E) Photovoltaic cells


D

Environmental & Atmospheric Sciences

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The equatorial regions of the African continent are dominated by which two climate categories?

A) BS/BW ? steppe and desert B) Af/Ca ? tropical rainy and humid subtropical C) Af/Aw ? tropical rainy and tropical savanna D) ET/EF ? tundra and ice cap E) Aw/Cs ? tropical savanna and Mediterranean

Environmental & Atmospheric Sciences

If we equate the entire Earth history to a single calendar year, then the human history only takes place in the last 30 seconds.

a. true b. false

Environmental & Atmospheric Sciences

An area of land in which there is little or no human development is referred to as a

A. tract development. B. multiple land use. C. reserve. D. wilderness.

Environmental & Atmospheric Sciences

A flood recurrence interval of 100 years means that floods of that size will occur only once every 100 years

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences