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An ____ is a particular geographical region of indefinite boundary.
A ____ is a geological formation consisting of an underground enclosure with access from the surface of the ground or from the sea.
A ______ is arid land with little or no vegetation.
A _____ is a piece of enclosed land cleared of trees.
A ______ is a land that is covered with trees and shrubs.
A ____ is a deep wide chasm.
A ____ is a local and well-defined elevation of the land.
A ______ is an impenetrable equatorial forest.
A ____ is a body of (usually fresh) water surrounded by land.
A ________ is a land mass that projects well above its surroundings.
An _____ is a large body of water that constitutes a principal part of the hydrosphere.
A ______ is a large indefinite location on the surface of the Earth.
A _____ is a large natural stream of water.
A ___ is a division of an ocean or a large body of salt water partially enclosed by land.
A ______ is a natural body of running water flowing on or under the earth.
A ______ a long depression in the surface of the land that usually contains a river.
