4. in which test tube was the activity most like that of a real human stomach? explain.

Scientific thinking: what clues about biology might road kill provide?

What two temperature scales do scientists use

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.