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Definition
| A chain or cluster of islands, formed tetonically. |
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| An island of coral which incircles a lagoon. |
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| A region in which all water drains to a common area. |
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| A deep ravine between cliffs, often made by a river. |
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| A point of land extending into a body of water. |
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| A significant vertical rock exposure. |
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| A large landmass on Earth (or a large landmass unseparated by water on Earth) |
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| A fan-shaped landform made of silt that forms on the mouth of a river. |
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| An area that receives an average annual precipitation of less than 10 in. per year. |
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| A landform that extends above the surrounding terrain. |
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| A piece of sub-continental land completely surrounded by water. |
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| A narrow strip of land connecting 2 pieces of land, usually between water. |
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Definition
| An elevated area of land with a flat top and cliffs for sides. |
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Definition
| A large landform that stretches above the surrounding area, usually in a peak. |
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| A piece of land surrounded by water but connected to land via an isthmus. |
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| A piece of land which is flat or gently rolling. |
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| An area of highland with a flat top. |
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Definition
| A flat area of land with temperate climates, moderate rainfall, and grasses and shrubs rather than trees. |
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Definition
| A rock, sandbar or other feature lying beneath the surface of water. |
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Definition
| A grassland ecosystem with an open canopy of trees. |
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Definition
| An ecosystem (offically a biome) in which the tree growth is hindered by the cold temperature and short growing seasons. |
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| A depression with predominant extent in one direction. |
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| An opening in a planet's surface which allows hot magma, ash, and gases to escape from down below. |
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Definition
| An area of water mostly surrounded by land. |
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Definition
| An extremely slow-moving stream or a marshy lake or a wetland. |
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| A human-made channel for water. |
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| The confine of a river, slough, or ocean strait consisting of the bed and banks. |
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Definition
| A small bay, often circular and inside a larger bay. |
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Definition
| A partly enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the open sea. |
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Definition
| A long, narrow inlet with steep sides. |
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Definition
| A perennial mass of ice which moves over land. |
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Definition
| A large bay that is part of an ocean or sea. |
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Definition
| A body of sea water or brackish water separated from the sea by some form of barrier. |
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Definition
| A body of liquid, larger and deeper than a pond, which is surrounded by land, not connected to the ocean. |
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Definition
| A type of wetland subject to frequent or continuous flood. |
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Definition
| The part of the river where it connects to a larger waterform, such as a sea, ocean, or lake. |
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Definition
| A major body of salt water. There is one continuous one. |
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Definition
| A rocky area of a river that is faster and more turbulent than the other areas. |
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Definition
| A human-made lake used to store water, usually made by a dam. |
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Definition
| A natural watercourse, usually freshwater, flowing towards a lake, ocean, sea, or larger river. |
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Definition
| Usually a large body of saline water connected with a ocean. Sometimes used to mean a lake of salt water with no natural outlets. |
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Definition
| A sea or ocean inlet larger than a bay and wider than a fjord or a narrow sea or ocean channel between two landforms. |
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| The beginning point of a river. |
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Definition
| A place where liquids or gases from under a planet's crust squirt out. |
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Definition
| A narrow, navigable channel of water which connects two larger bodies of water, usually between land. |
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Definition
| A wetland featuring flooding in many areas, dominated by trees. |
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Definition
| A river which flows into a larger river, but not directly into a sea, lake, or ocean. |
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| A place where water rapidly flows downward over a cliff. |
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