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the mass of salt water that covers most of the earth’s surface

a natural feature of the earth’s surface

a piece of land that is completely surrounded by water

a natural flow of water that continues in a long line across land to the sea

an area of land that is higher than the land around it, but not as high as a mountain

a large area of flat land

one of the seven main areas of land on the Earth, such as Asia, Africa, or Europe

a very high hill, often with rocks near the top

an area of low land between hills or mountains, often with a river flowing through it; the land that a river flows through