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Basics of Geography II: Maps and Globes (5:56)
Geographers use maps and globes to represent the Earth. They have developed a system of grid lines to identify places on these representations.
Basics of Geography II: Water (4:04)
Four oceans plus all the rivers, lakes, streams and ground water make up 70 percent of EarthÕs surface. Water cycles constantly through evaporation, condensation and precipitation, but it is a finite resource.
Basics of Geography II: Land (8:40)
The EarthÕs surface is changed by climate sources, such as wind and water, and by geologic sources, such as continental drift, earthquakes and volcanoes.
Basics of Geography II: Water and Landforms (0:35)
The flow of water across the planet and erosion play a large hand in the shaping of landforms.
Basics of Geography II: Natural Resources (11:01)
Water, land and air are the three basic resources of Earth; others are soil, vegetation and minerals. Most of these resources are non-renewable and must be conserved.

