In science, all concepts are (2 points) select one: a. opinions and facts. incorrect b. beliefs that are familiar and complicated. c. testable and observable. d. theories that cannot be proven.

How does the molecular clock work? a. it analyzes the brain functionality of two different species. b. it examines and compares the physical characteristics of two different species. c. it illustrates relationships between two different species. d. it compares the number of mutations that exist in the dna of two different species.

Which measure of an earthquake depends on how close you are to the focus?

As molecules are formed from metabolism, entropy __ and the universe becomes less disordered. a. is decreased b. is increased c. moves closer to equilibrium d. is unchanged