I think the phrase you are looking for is "natural resources" - these include fresh water, food and fertile soil on which crops can easily be planted.
Dark matter makes up about 27% of the universe.
Landscape of your community can change by growth as more people move there they would have to build on more. hope this helps!!!!
Austria-Hungary was a nation of many different nationalities. If each ethnic group became an independent nation, there would be no more Austria-Hungary. Therefore, the nationalists were a threat to Austria-Hungary because if they took action, the empire would fall apart.