The glassy texture of obsidian is the result of extremely slow cooling

a. True
b. False

False

Environmental & Atmospheric Sciences

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Why do pegmatite mineral crystals grow so large? What will be an ideal response?

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Which geologic time principle places events in order based on their position?

A. Deep time B. Relative time C. Numerical time

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Glaciers have existed throughout all of Earth's history

Indicate whether the statement is true or false

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Environmental & Atmospheric Sciences

Nitrogen Fixation

What will be an ideal response?

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Environmental & Atmospheric Sciences