What issues present the most pressing problems for the U. S.?

aging population

increasing energy costs

lack of natural resources

lack of skilled labor

As rocks are weathered and eroded, what do wind and water often transport to a new location? a. sediments b. chemicals c. rock layers d. river systems

How does the harmattan contribute to desertification in the Sahel? Choose all answers that are correct. A. It blows rain clouds away. B. It erodes soil. C. It sparks fires. D. It spreads sand to other regions.

What islands lie off the west coast of ecuador

How has immigration influenced the culture of the United States?

What would the world lose if your religion was lost?

An increase in temperature worldwide is known as

How long river Amazonka

Where does most of the water that falls to the earth as precipitation originate?

Which tool would you use to measure the mass of a mobile phone

Through which port does France export much of its agricultural and manufactured goods? Cannes Lille Bordeaux Marseille