16. What factors explain why the United States' most important trade partner is Canada? a. Culture and lack of resources
b. Climate and physical geography
c. Location and level of development
d. Migration and urbanization

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.

Find the coordinates of a if b(-9,-10) is the midpoint of ac and c has the coordinates of (-1,9)

The kind of wood most often used in contemporary furniture is