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100
low land area between hills and mountains
Valley
100
wide, flat lands
Plains
100

How much of Earth is made up of land? 

Only one fourth

200
the highest landform, usually has peaks
Mountains
200
The largest body of water and is salty
ocean
200

% of water that is NON drinkable

97%

300
land surrounded by water
island
300
shorter and rounder than mountains
Hills
300

an opening in the Earth's crust that allows lava to come to the surface, may cause mountains

volcano

400
high land that is also flat
Plateau
400
large streams of water that flow across land
river
400

 How much of Earth is made up of water? 

three fourths or 71%

500
an area with a very dry climate
desert
500
a large body of water with land all around it
Lake
500

Forces that Originate within Earth 

Erosion and Plate Tectonics

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