Principle which explains that in a sequence of undeformed sedimentary rock, the oldest bed is on the bottom and each higher bed is successively younger, is called the principle of:

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.

The earth rotates on its axis and revolves around the sun every

What are the answers for the following questions?