A huge, slow moving, sheet of ice.
A Small river or stream that connects into a larger river.
The boundary that separates rivers flowing towards opposite sides of a continent; in North America in the Rocky Mountains.
An area on the side of a mountain away from the wind that receives little rainfall.
The area on the Earth between the 23 1/2 North and 23 1/2 South lines of latitude, where the climate is almost always hot.
A cold, dry region covered with snow for more than half the year; a vast, treeless plain where the subsoil is always frozen.
Permanently frozen layer of ground below the top layer of soil.
A region of flat or rolling land covered with tall grasses.
A political division of land in Canada, similar to a state in the US.
Deposited by water, relating to the fertile topsoil left by rivers after a flood.
A large company that runs huge farms to produce, process and distribute agricultural products.
Electric power produced by moving water, usually generated by releasing water from a dam across a river.