A hydrogen-oxygen fuel cell uses

A) hydrogen and water and generates electricity and oxygen.
B) hydrogen and oxygen and generates electricity and water.
C) carbon dioxide and water and generates electricity and hydrogen.
D) hydrogen and water and generates electricity, oxygen and carbon dioxide.


B

Environmental & Atmospheric Sciences

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What will be an ideal response?

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A) India B) France C) South Africa D) Russia E) the United States

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The orientation of a coastline affects the appearance of a shoreline primarily because it influences

A. the erosive effects of waves. B. which way river sediment enters the shoreline system. C. how much sun it receives. D. the direction of prevailing winds.

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In general, the Sun's energy output increases when there are large numbers of sunspots

Indicate whether the statement is true or false

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