Here's a hypothesis for the duckweed experiment: "if duckweed is grown at pH 5, then it will grow at the same rate as when grown at pH 7, or normal pH, because it can tolerate mildly acidic environments." Which elements should be controlled variables for this experiment? Check all that apply. environmental pH timing of experiment duckweed population environmental light amount of nutrients environmental temperature

Question

Emma Stout

Biology

18 April, 19:49

Here's a hypothesis for the duckweed experiment: "if duckweed is grown at pH 5, then it will grow at the same rate as when grown at pH 7, or normal pH, because it can tolerate mildly acidic environments." Which elements should be controlled variables for this experiment? Check all that apply. environmental pH timing of experiment duckweed population environmental light amount of nutrients environmental temperature

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Ariella Blake · Answer 1

The controlled variables in an experiment are the ones that are kept the same for all trial runs, to ensure that no other factor except for the independent variable is being changed. In this case, the controlled variables are:

Timing of experiment

Duckweed population

Environmental light

Amount of nutrients

Environmental temperature