Improved insulation, energy efficient windows and curtains, and caulking and sealing cracks could reduce commercial building and household energy loss by up to ________ percent.

A. 20
B. 10
C. 50
D. 30


Answer: C

Environmental & Atmospheric Sciences

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When hydrogen is burned as a fuel, the primary waste product produced is ________

A) carbon monoxide B) H2O C) hydrocarbons and CO2 D) CO2 and H2O E) CO2

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Why is rifting very prominent in East Africa?

What will be an ideal response?

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True or False: All clay-mineral grains in a clastic sedimentary rock are clay size

Indicate whether this statement is true or false.

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________ is a metamorphic rock with distinct light and dark layers that formed at high temperatures and pressures.

A. Gneiss B. Slate C. Phyllite D. Schist E. Greenstone

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