triangular section of land built up at a river's mouth

What is the term for an area of flat land, usually at low elevation?

an area of flat land that is higher than the surrounding land and is usually very large

arid land with a very small amount of yearly precipitation

ocean that is partially enclosed by land, larger than a bay

a body of water partially enclosed by land, smaller than a gulf.

A deep valley with steep sides, typically one with a river flowing through it.

A cascade of water falling from a height, formed when a river or stream flows over a steep incline.

A vast body of salt water that covers almost three fourths of the earth's surface. (five of them)

A large area covered with trees and undergrowth.

A large body of water surrounded by land.

A steep rock face, especially at the edge of the sea.

A large natural elevation of the earth's surface rising abruptly from the surrounding level.

A valley is defined as being ...

An area of land where water collects

a natural stream of water that flows to the ocean

one of the 7 very large land masses of the world

the study of the Earth, with the mountains, bodies of water, countries, and people

a drawing or picture showing the features of a land mass

a ball with a map of the whole world on it

the study of the Earth's crust, strata, and especially rocks

a book of maps; travelers used to carry one on trips