Insects are usually a. essential for successful agriculture b. harmful to agriculture c. invasive species d. keystone species e. genetically modified species

When should a bar graph be used? a. when there is no independent variable. b. when the independent variable is continuous and does not show a relationship to the dependent variable. c. when the independent variable is continuous and shows a causal link to the dependent variable. d. when the independent variable is composed of categories and does not show a relationship.

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Which of the following is required of a new drug?me