The bond angles around the carbon atom in methane (CH4 ) are all:

A) 180°
B) 120°
C) 109.5°
D) 90°


C

Environmental & Atmospheric Sciences

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The problem of food waste is of greater concern in:

A. The industrial world B. The less developed world C. Africa D. India

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A substance can be cooled below absolute zero

a. True b. False Indicate whether the statement is true or false

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Soot generated in Europe is darkening arctic ice and lessening its ability to reflect sunlight, thereby hastening the disappearance of ice in the Arctic

Indicate whether the statement is true or false

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True or False: All igneous rocks exhibit identical grain size

Indicate whether this statement is true or false.

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