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A volcano is an opening in the earth's crust which lava, volcanic ash, and gases escape.

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This is a bunch of islands located close together.

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the malay archipelago is the largest group of islands in the world with over 25,000 islands indonesia has over 17,00 islands.

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its a ringed shaped coral reef

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the great chagos bank is the biggest atoll.

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a barren area were soft rock had eroded not a lot there.

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bad lands national park is the biggest area of 244,000 acres of badlands.

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a body of water forming a shoreline larger than a cove but smaller than a gulf.

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a bay forms a indentation in the ocean and forms a body of water bigger than a cove but smaller than a gulf

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Buttes are tall, flat-topped, steep-sided towers of rock.

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Buttes were created through the process of erosion and the biggest butte is the big southern butte, its 3,000 years old.

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deep gorge normally one with a river flowing through it.

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a deep with steep sides, most likely with a stream going through it.

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large size extending into a body of water, usually the sea.

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Cape of Gjuhëz, Karaburun Peninsula. is the biggest cape in the world.

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natural void in the ground, specifically a space large enough for a human to enter.

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cave often form by the weathering of rock. the Son Doong is located in Central Vietnam and is the largest cave

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a navigable stream connecting to bodies of water.

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the bed were a natural stream of water runs. the the Beijing–Hangzhou Grand Canal is the biggest channel.

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a high steep face of a rock.

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the east face of Great Trango in the Karakoram mountains of northern Pakistan. is the biggest cliff in the world

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one of the main landmasses of the globe, usually as seven.

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asia is 17.21 million mi² large.

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a delta is an area of land that has been built up at the mouth of a river.

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the Ganges Delta the world's largest delta, it is 220 mi large

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arid land with usually no vegetation.

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the sahara desert is the largest desert in the world it is 3.552 million mi² large.

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a sand hill or sand ridge formed by the wind mostly in desert regions or near lakes and oceans.

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The Duna Federico Kirbus is the highest dune in the world, measuring a whopping 1234 meters in height 2845 above sea level.

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a long, narrow arm of the sea bordered by steep cliffs: usually formed by glacial erosion.

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The longest fjord in the world is Scoresby Sund in Greenland (350 km),

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a large space of land covered with trees and underbrush.

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The boreal forest is the largest forest in the world, wrapping right around Earth's entire northern hemisphere,

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a hot spring that intermittently sends up fountainlike jets of water and steam into the air.

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the biggest geyser is Located in the Norris Geyser Basin in Yellowstone National Park is Steamboat Geyser.

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an extended mass of ice formed from snow falling and accumulating over the years and moving very slowly, either descending from high mountains, as in valley glaciers, or moving outward from centers of accumulation, as in continental glaciers.

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Lambert Glacier, Antarctica, is the biggest glacier in the world.

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a part of an ocean or sea partly enclosed by land.

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Water in the Gulf of Mexico comes from the Atlantic Ocean and the Caribbean Sea flows through Florida and flows into parts of the southern United States and Mexico.

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a natural elevation of the earth's surface, smaller than a mountain.

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the highest hill in the world is Cavanal Hill. it is  1,999 feet tall.

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a large floating mass of ice, detached from a glacier and carried out to sea.

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the  A-76 iceberg is the biggest iceberg .  The huge iceberg measures about 1,668 square miles

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An island is a piece of land surrounded by water.

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Greenland is the world's biggest island. around 836,300 mi² large.

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an isthmus is a narrow strip of land with sea on either side, forming a link between two larger areas of land.

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the largest isthmus is , The country of Panama, which measures 676 km in length.

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a jungle is an area of land overgrown with dense forest and vegetation, mostly in the tropics.

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The largest forest is the Amazon rainforest. Covering an area of over 1.2 billion acres, the Amazon rainforest is the largest in the world

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A lagoon is a body of water separated from larger bodies of water by a natural barrier

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The New Caledonia lagoon is the largest lagoon

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A lake is a body of water that is surrounded by land.

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lake Superior | 82,100 km² (31,700 sq mi) is the largest lake in the world

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A marsh is a type of wetland, an area of land where water covers land.

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The Florida Everglades is the largest freshwater marsh in the entire world.

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A mountain is an elevated part of the Earth's crust.

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Mount Everest, located in Nepal and Tibet, is usually said to be the highest mountain on Earth. Reaching 29,029 feet at its summit.

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The ocean is a ongoing body of salt water that covers more than 70 percent of the Earth's surface.

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The Pacific Ocean is the largest and deepest ocean in the world.

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a peninsula is a piece of land almost surrounded by water.

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The Arabian peninsula, or Arabia, is the world's largest peninsula, covering an area of 3.2 million square km.

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plains are found on all continents except Antarctica.

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The West Siberian Plain is a vast flatland area in central Russia that stretches almost the full latitude of the country.

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A plateau is a flat, area that rises above the surrounding area on at least one side.

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the largest plateau in the world is the Tibetan Plateau, it is  2.5 million square kilometers.

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A river is a  body of water that flows downhill from the force of gravity.

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the Nile is the largest river in the world its 4,132 miles long.

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seas are smaller than oceans.

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the Philippine Sea is the largest sea in the world it is 2.199 million mi² large.

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a narrow passage of water connecting two seas to each other.

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Straits of Malacca is a funnel-shaped narrow waterway that is   800 km long it connects the South China Sea and the Andaman Sea.

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a body of water that is by its self.

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the Amazon River floodplain, which is significant for its large number of fish and tree species.

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Tundras ecosystems are treeless areas found in the Arctic and on the tops of mountains.

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the most northern reaches of land on our planet, the High Arctic tundra of northern Greenland, or Kalaallit Nunaat as it is known locally, is a unique and fragile ecosystem.

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Valleys are most commonly formed by rivers and creates a relatively flat plain or between ranges of hills or mountains.

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The largest valley in the world is the rift valley that runs along the Mid-Atlantic Ridge in the Atlantic Ocean.

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Mauna Loa on the Island Hawaiʻi is the world's largest volcano.

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A waterfall is a point in a river or stream where water flows over a vertical drop

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Volcanoes are openings, or vents where lava, tephra (small rocks), and steam erupt on to the Earth's surface.

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Angel Falls in Venezuela, the tallest waterfall on land, Niagara Falls carries 2,000 times less water,