The photograph below shows Jamal’s bird feeder. Jamal asked the question “Are hummingbirds attracted to red feeders?” Then, he set up an experiment to test the question. What is the independent variable

The photograph below shows Jamal’s bird feeder. Jamal asked the question “Are hummingbirds attracted to red feeders?” Then, he set up an experiment to test the question. What is the independent variable in Jamal’s experiment? the amount of food the color of the feeder the height of the feeder the number of hummingbirds

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