Which rock type makes up approximately 90% of the Earth's crust

A) sedimentary
B) metamorphic
C) igneous


C

Environmental & Atmospheric Sciences

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_________ organisms need no oxygen to survive. Fill in the blank(s) with the appropriate word(s)

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Photovoltaic cells are commonly used to power

A) lawn mowers. B) lighthouses. C) calculators. D) industrial manufacturing.

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A convergent boundary is usually associated with which physical features?

A) Rift valleys B) Volcanic arcs C) Horizontally displaced rocks D) Submarine trenches E) Volcanic arcs and submarine trenches

Environmental & Atmospheric Sciences

The "D" in DNA stands for which of the following?

A) b-2-deoxy-D-ribose B) b-2-deoxy-L-ribose C) b-3-deoxy-D-ribose D) b-3-deoxy-L-ribose

Environmental & Atmospheric Sciences