When the voltage across a steady resistance is doubled, the current

A. is quadrupled.
B. is doubled.
C. is half.
D. remains the same.

Answer: B

Environmental & Atmospheric Sciences

Which of the following pollutants act as greenhouse gases?

A) CO, NO B) SO3, NO2 C) SO3, NO2, O3 D) CO2, CH4

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Environmental & Atmospheric Sciences

Chemical weathering processes are particularly effective on limestone landscapes, forming

A) pressure-release jointing. B) hydrolysis plains. C) exfoliation domes and arch-like forms. D) karst topography.

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Environmental & Atmospheric Sciences

Which of the following units cannot be used to measure the volume of water?

A. cubic meter B. liter C. gallon D. acre

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Environmental & Atmospheric Sciences

What is the primary factor driving trees to grow so tall in forests?

A. water B. nitrogen C. light D. wind E. heat

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Environmental & Atmospheric Sciences