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Biology, 29.09.2020 06:01 savannahsharp5149
Three redwood trees are kept at different humidity levels inside a greenhouse for 12 weeks. One tree is left outside in normal conditions. The heights of the trees are measured once a week. What is the test (independent) variable? what is the dependent variable and the control group.
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Three redwood trees are kept at different humidity levels inside a greenhouse for 12 weeks. One tree...
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