What are proven oil reserves? Why has the global net energy for extracting oil been dropping? Is there a global shortage of oil? What three countries have the world’s largest proven oil reserves?...

What are proven oil reserves? Why has the global net energy for extracting oil been dropping? Is there a global shortage of oil? What three countries have the world’s largest proven oil reserves? Which three are the largest producers of oil? Which three are the largest consumers of oil? What percentage of the world’s proven oil reserves does the United States and China have? What is OPEC? Summarize the story of oil production and consumption in the United States. What major factors could increase or decrease oil production in the United States? What are the major advantages and disadvantages of using crude oil as an energy resource?