succession occurs in areas where there is already soil, but the plants and animal life there has been wiped out.

a. Secondary

b. Primary

c. Annual

d. All of these

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs