Tantalum, which is highly prized for its use in capacitors for electronic circuits found in most modern electronic devices, comes from the mineral __________.

a. Chromium
b. Calcite
c. Copper
d. Coltan
e. Cobalt


d. Coltan

Environmental & Atmospheric Sciences

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In contrast to a generator, a motor is a

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Peridotite is the main constituent of which part of the Earth?

A) Crust B) Magma chambers C) Rift zones D) Upper mantle

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Sedimentary clasts are

A. deposits of sand in a lens shape. B. small sedimentary basins along a river or stream. C. loose fragments of rocks and minerals.

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How many channels are found in complex III of the electron and H+ transport chain?

A) 1 B) 2 C) 3 D) 4

Environmental & Atmospheric Sciences