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Question
What is/are the independent variable(s) in this observational study?
O date and time
O location of iButton data logger (river bed or floating mat)
O both A and B
O temperature
O the Eel River
Fig: 1
O date and time
O location of iButton data logger (river bed or floating mat)
O both A and B
O temperature
O the Eel River
Fig: 1
