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Mathematics 26 Online
OpenStudy (anonymous):

The theories on the expansion of the universe a. may harm science if proved invalid b. may be proved invalid by new discoveries c. are weakened by frequent examinations d. are too durable to change when re-examined

OpenStudy (callisto):

@xdebrax Please post the question in the Physics group. Thanks. Link to Physics group: http://openstudy.com/study#/groups/Physics

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