Reactants A and reactant B undergo a chemical reaction to form product C.

Here's one way to follow the scientific method. place the missing steps in the correct position in the process.

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?