It is expressed in terms of distance, time, or direction. For example, Chicago, Illinois, is located?.

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.

These factors threaten north americas ecosystems

An enormous wave generated by an earthquake beneath the seafloor is known as a