Which is a primary source? data on weather and climate an article in a current encyclopedia a journal entry from a young bride traveling west a new book about the people of ancient china

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.

Asap! ! ! ! true or false the gobi desert, the largest desert in asia. covers parts of northern china and southern russia

Where did the solar system come from?