| A | B |
|---|
| river | a moving body of water that usually has its source in an area of high ground |
| Ganges River | flowing out of the Himalaya Mountains in India |
| Rivers | often flow to a larger body of water such as a lake, ocean, or sea |
| Nile River | in Egypt; flows into the Mediterranean Sea |
| mouth | the end of a river |
| Delta | deposits of silt built up |
| civilization | A society that has a high level of culture and social organization including organized government, job specialization, and a organized belief system. |
| trade | The exchange of goods or service between people. |
| irrigation | A system to bring water to support crops. |
| adaptation | A change made to survive an environment or to overcome a disadvantage. |
| Aswan High Dam | Dam across the Nile River in Egypt. Created Lake Nassar and helps to create more farmland. Built between 1960 and 1970. |
| Three Gorges Dam | A dam across the Yangtze River in China scheduled to be completed in 2009. |
