The first great civilizations all had one thing in common: access to a river or other natural water source that allowed them to grow surplus amounts of food.

Which of the following regions has what is considered the most rugged terrain in oklahoma? a. the wichita mountains b. the arbuckle mountains c. the sandstone hills d. the ouachita mountains

Based on the information in the graph, what can you conclude about humans in the world in general?

Which of the following is the main purpose of using an anchored network of booms which funnel debris to a collection area?