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| A large system of mountain ranges located along the pacific coast of central and south America |
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| large grassy treeless area in south America used for grazing and farming |
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| a savanna that has a flat terrain and moderate rainfall which makes it suitable for farming |
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| a vast area of grassland and rich soil in south central south america |
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| a river mainly in venezuela and part of south americas northernmost river system |
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| the second longest river in the world and one of south americas three major river systems running about 4000 miles from west to east and emptying into the atlantic ocean |
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| a river in central south america and one of its three major river systems originating in the highlands of southern brazil traveling about 3000 miles south and west |
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| a forest region located in the tropical zone with a heavy concentration of different species of broad-leaf trees |
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| a way of clearing fields for planting by cutting trees, brush and grasses and burning them |
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| an ancient technique for growing crops on hillsides or mountains slopes using step like horizontal fields cut into slopes |
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| a factor that causes people to leave their home lands and migrate to another region |
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| a factor that causes people to leave their home lands and migrate to another region |
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| the basic support systems needed to keep an economy going, including power, communications transportation, water, sanitation, and education systems |
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