What is the basic d/f b/n a contour line and a formline​

Palo duro is the largest canyon in north america. t f

Which evidence is most likely used to indicate the beginning of solar system formation? a. materials combined to form a mass. b. materials were pulled together by gravity. c. water condensed and collected to form oceans. d. different species of microorganisms lived on earth.

Name one type of data that h-r diagrams do not show.