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| Chapter 2 |
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abandon
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leave something behind
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ancestors
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people from whom you descend; for example, your grandparents, parents, and so on
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ancient
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very old
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chamber
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a room
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climate
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the type of weather that a place has
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concave
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curving inward
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conserved
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saved
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cultivate
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prepare land to grow food, trees, and flowers
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dams
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walls built across rivers to stop the water from flowing
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descendants
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your children, grandchildren, and so forth
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disappeared
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went out of sight
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drought
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a time of little or no rainfall
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dwellings
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places where people live
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enemies
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people who want to harm you
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erosion
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when soil washes away or blows away because of the weather
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high-altitude
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high above the ground
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ladders
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sets of steps used for climbing
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ledges
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flat areas of rock that stick out
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lightbulbs
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round glass parts of electric lights
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migrated
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moved from one place to another
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neat
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slang for great
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physical
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related to objects in the real world
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pit houses
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square houses that are dug into the ground
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protection
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something that keeps you from being hurt
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reservoirs
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bodies of water saved for use
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ruins
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broken parts of old buildings
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surrounds
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is all around something
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swirls
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moves in a twisting and turning motion
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underground
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located below the earths surface
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vanish
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disappear suddenly
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