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be5llmollemsJo
be5llmollemsJo be5llmollemsJo
  • 08-08-2016
  • Biology
Answered

An experiment in which only one variable is changed is a(an) __________ experiment.

Arandomized
Bnatural
Cdouble blind
Dcontrolled

Verified Answer :

Anonymous Anonymous
  • 09-08-2016
Dcontrolled 
is the right answer because an experiment in which an observer tests a hypothesis by looking for changes carried by alterations to a variable.
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garydesir1
garydesir1 garydesir1
  • 09-08-2016

Hi


The correct answer is : D

Because a control experiment is one in which a hypothesis is tested by the manipulation of a single variable.


I hope that's help:)

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