Biology, 04.09.2020 22:01 karinagramirezp072gb

A scientist conducted an experiment on the amount of TV watched versus peird the size of the person watching TV. He studied 5 different people: each of
whom watched TV in the same room, with the same temperature and
lighting, One watched for 1 hour a day, the other 2 hours, the next 3 and so
on What is a controlled variable in this experiment?"

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A scientist conducted an experiment on the amount of TV watched versus peird the size of the person...