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Biology 7 Online
OpenStudy (andrewkaiser333):

Evidence for sea-floor spreading has come from a. changes in the depth of the ocean. c. ancient climatic conditions. b. magnetic minerals on the ocean floor. d. the breakup of Pangaea.

OpenStudy (anonymous):

I think it's b >.< but I'm not sure on this one.

OpenStudy (andrewkaiser333):

kk thanks

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