something in the environment that people can use

a resource that comes back without human help

a large area in which places share common features

a resource that cannot be replaced once they are used

Ohio is in which region of the United States?

coal, oil, salt, minerals, sand and gravel are all what type of resource?

wind, sun, and water are what type resource?

Which waterway borders Ohio to the north?

Which type of map would you use to find the location of rivers in Ohio?

What can you find on a map?

The body of water to the south of Ohio is

The _____ smoothed and flattened the land.