Diagram of blood cell

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.

Acquired mutations can result from radiation pollution toxins inheritence select all that apply

Diagram of the evolution of land plants?