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Home Q & A Board Biology-Related Homework Help Environmental and Conservation Biology
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jake08benn jake08benn
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6 years ago
In a controlled experiment, ________.
 
  A) you need only a single experimental organism which is tested again and again
  B) the researcher controls for the effects of all variables except one
  C) the researcher has several hypotheses, one of which will be proven correct
  D) the experimental organisms have all been used before and given good results
  E) the researcher knows the outcome before beginning the experiment
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rosie_9800rosie_9800
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6 years ago
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jake08benn Author
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6 years ago
Thanks
smi3
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Yesterday
Helped a lot
dearsophia21
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2 hours ago
Just got PERFECT on my quiz
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