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Chemistry 14 Online
OpenStudy (anonymous):

Please Help! Don't remember going over this! What activates a convection current, starting the flow of a fluid? A. cold temperatures at the north pole B. heated liquids at the earth’s surface C. iron-rich rocks in the mantle D. temperature differences in the mantle

OpenStudy (abb0t):

Is this chemistry?

OpenStudy (anonymous):

Not quite sure, I think it's related to Chemistry, though.

OpenStudy (anonymous):

Seriously! Urgent help!

OpenStudy (abb0t):

This looks like biology.

OpenStudy (anonymous):

Oops.

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