According to the big bang theory, which statement is accurate about how the universe came to be? a) It expanded slowly. b) It gradually warmed. c) Stars and galaxies formed. d) Atoms such as hydrogen were destroyed.

Which source would provide the most bias-free information about smoking and increased health risks? a) a website created by heart disease patients b) a research study conducted by the mayo clinic eliminate c) a public service message sponsored by tobacco companies d) an online question forum conducted by attorneys for cardiac specialists