On a topographic map, what is used to show elevation? a. relief c. blue lines b. contour lines d. an open circle Please select the best answer from the choices provided A B C D

Which statement best summarizes the importance of ernest rutherford’s gold foil experiment? it proved that all of john dalton’s postulates were true. it verified j. j. thomson’s work on the atomic structure. it showed that an electron circles a nucleus in a fixed-energy orbit. it showed that a nucleus occupies a small part of the whole atom.