Advanced Placement (AP), 11.10.2020 06:01, smartpeep

Please help me out!! This is AP BIO Scientific Method Researchers noticed that the number of earthworms increased from the Spring of 2017 to the Spring of 2018, a time period where their crops flourished. They hypothesize that Earthworms are necessary for healthy crops.
a. Describe an experiment that could test their claim. You must include the independent variable, dependent variable, control and constants. (A diagram may be helpful)

Please help me out!! This is AP BIO Scientific Method

Researchers noticed that the number of eart

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Please help me out!! This is AP BIO Scientific Method Researchers noticed that the number of earthw...