Biology, 27.12.2019 23:31 reyamukhtar

During an investigation, sam observes the number of hummingbirds that come to his large bird feeder at different times of day. he fills the feeder to the top the first day and counts the number of birds at 6 a. m., noon, and 6 p. m. over ten days. what are the independent and dependent variables in sam’s investigation?

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