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ju5lekshiasimm ju5lekshiasimm
  • 20-01-2017
  • Chemistry
Answered

Why is a control needed in a valid experiment?

Verified Answer :

damselflypc
damselflypc damselflypc
  • 20-01-2017

You need a control so you have something to compare the experimental group on-- If you don't have a control group, how will you know what's changed?

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