What type of model did copernicus propose for the solar system?

a) elliptical
b) retrograde
c) geocentric
d) heliocentric

What are canada’s major boundaries?

How can studying economics us make better choices about how to use scare resources

Which characteristics of temperature and salinity have the greatest influence on the movement of deep-ocean currentsa. warm and low salinityb. cold and high salinityc. cold and low salinityd. warm and high salinity