1) The Appalachian Mountains, running along the eastern coast of the United States, are one of the oldest mountain ranges in the world.

2) The human body contains enough carbon to make over 9,000 pencils.

3) Banks provide various financial products, including savings accounts, checking accounts, credit cards, mortgages, and investment services.

4) The concept of political parties allows for organized groups to mobilize support, articulate policy positions, and compete for political power through elections and political campaigns.