Astronomers believe was originally a part of earth.
a. the sun
c. jupiter
b. the moon
d. mars

The most common economic system in the world is aclosed economy.command economy.mixed market economy.traditional economy.

Why does sweden and norway have steep roofs

Which statement explains what upwelling causes? a. upwelling causes tides to rise and fall. b. upwelling causes changes in the direction of currents. c. upwelling causes nutrients, minerals, and tiny organisms to rise. d. upwelling causes currents in the pacific ocean to change direction. i think the answer is c.