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Tsync Tsync
wrote...
Posts: 3450
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8 years ago
An effective theory must:
A) must have been around for centuries or longer.      B) have been proven.
C) be continuously tested.      D) include mathematical formulae.
Textbook 
Astronomy Today

Astronomy Today


Edition: 8th
Authors:
Read 416 times
3 Replies
Minoring in physics
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Answer verified by a subject expert
RatatouilleRatatouille
wrote...
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Posts: 3710
8 years ago
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Tsync Author
wrote...
8 years ago
Wonderful, thanks for your time and effort
Minoring in physics
wrote...
8 years ago
Message back if you need anything
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