The land that supplies water to a river system is a
a. divide.
b. reservoir.
c. tributary.
d. watershed.

What would be the distance of all the planets to the sun in astronomical units?

Which part of a mountain receives the majority of moisture due to the rain shadow effect? a. the leeward side b. the windward side c. the bottom of the mountain d. all parts of the mountain receive equal amounts of moisture.

How many active volcanos are there in nicaragua