Multiple Choice
Use the following information for questions:
Decide if the study is an observational study or an experiment.
-Twenty blue-fin tuna were randomly assigned to two tanks of water, 10 tuna in each tank. One tank was polluted with methyl mercury, while the other tank was not polluted. The survival times of the fish in the two tanks were compared.
A) Observational Study
B) Experiment
Correct Answer:
Verified
Correct Answer:
Verified
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