What are large particles that are rolled or pushed on the bed of the stream called?

Despite the country's wealth from oil many Venezuelans ... A) are becoming less accepting of Chavez because of his ego and abusive power as a political figure. B) are suffering from chronic poverty and widespread unemployment.

What is the beginning of a river called? a. mouth b. tributary c. source d. estuary

Explain how wetland areas near lakes and streams improve water quality

What is one cause of a country's population increase?

Five things you can do (or are already doing) to protect the world's resources.

According to the earth science reference tables at which of these latitudes would average annual precipitation be greatest

What role has slang played in your own development of language and culture?

What is the length of the Brooklyn bridge

What is one positive economic impact of deforestation

An if-then statement is also called