Why do geographers use maps and what do maps tell us?

What two properties affect the density of ocean water

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.

In the figure, polygon abcd is transformed to create polygon a′b′c′d′. this transformation is a by a factor of .