= 3100 QUI Valuable Mine dis
QUIZ:
Valuable Minerals
An ore is a rock that contains which of the following?
1 gemstone only
2a mineral or metal with no practical use
3mineral or metal with economic usefulness
4particles of rock that erode into sediment

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ur answer is e & d

explanation:

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c. heat from the poles back down towards the equator.

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.