- Ocean: salt water that covers more than 70 percent of the earth's surface.
- Mountain range: a group of mountains.
- Valley: a depression between a mountain range.
- Hill: a natural elevation, smaller than a mountain.
- River: a large natural stream of water.
- Oasis: a lake in the desert.
- Desert: a dry region.
- Island: landmass, surrounded by water.
- Continent: bigger than the island.
- Flood: a flood tide.
- Earthquake: a movement of the earth crust.
- Volcano: natural elevation.
- Population: people habit in an specific area.
- Agriculture: cultivate
- Industry: manufacturing.
- Natural resources: can be used by a man.
Good job!!
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