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August 28, 2015

Homework Help: Biology (URGENT PLEASE!)

Posted by Elizabeth on Wednesday, November 24, 2010 at 10:50am.

This is a question of my last biology test:

Name at least one technological device that would have not been invented without scientific knowledge:
A.Radio
B.Ruler
C.Knife
D.None of the above

I answered D but got a cross for it. So can you please help me to solve what is the correct ans?

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