Flashcards › 4th grd social studies unit 1 les 2

natural regions places that share the same physical features coastal plain area of lowland with sandy beaches harbors a natural safe place where ships can dock tributaries small rivers that join to a larger river delta land that has been build up by soil carried by rivers fertile soil that is good for growing crops irrigation using canals, ditches or pipes to carry water to dry places sea level land that is level with the surface of the ocean geographic terms