Homework Help: science

Posted by sweetzaidie on Thursday, October 20, 2011 at 10:29pm.

why do scientist only change one varieble at a time during a experiment ?

science - SraJMcGin, Friday, October 21, 2011 at 2:12am
Try some of the following links for information:

http://search.yahoo.com/search?fr=mcafee&p=why+do+scientist+only+change+one+varieble+at+a+time+during+a+experiment+%3F+

Sra
science - Hannah, Sunday, October 23, 2011 at 6:49pm
If a scientist changes two variable he/she would not know which change would increase or decrease his/her theory or hypothesis. The scientist wants to determine one thing that changed it the most not two things!

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