A scientist studying monarch butterflies is interested in finding out which species of milkweed plant monarchs prefer. She plants 3 different species of milkweed (tropical milkweed, sw
milkweed, and purple milkweed). For each species, she plants 30 plants in separate plots of land and includes an additional plot containing 30 purple coneflower plants, which are not
preferred by monarchs. Once the monarch eggs hatch, she counts the number of caterpillars on the plants of each species to determine which species is preferred by monarchs.
1) What is the experimental group?
2) What is the control group?
3) What is the independent variable?
4) What is the dependent variable?
5) Name a variable that should be standardized between groups