Energy Crisis and Biofuels in Brazil

What was the main reason for the energy crisis in the United States during the 1970s?

• Conflicts in Southwest Asia

• High oil prices

• Lack of technology

• Natural disasters

What percentage of oil did Brazil import during its energy crisis?

• 50%

• 60%

• 80%

• 90%

What is the main source of Brazil's energy consumption?

• Nuclear energy

• Hydroelectric power

• Fossil fuels

• Solar energy

What has Brazil recently discovered that affects its energy supply?

• New sources of fossil fuels

• New solar technology

• New wind farms

• New hydroelectric plants

What is a concern for Brazil's leaders regarding fossil fuels?

• High cost

• Pollution and climate change

• Limited availability

• Import dependency

What is the main reason Brazil can export oil to other countries?

• It produces more than it needs

• It has advanced technology

• It has a large workforce

• It has favorable trade agreements

What is the main source of ethanol in the United States?

• Sugarcane

• Corn

• Wheat

• Rice

What is one of the problems associated with ethanol production?

• It increases CO₂ emissions

• It decreases food prices

• It requires more water than gasoline

• It is less efficient than gasoline

What is the role of ethanol in Brazil's transportation sector?

• It is used in all vehicles

• It replaces diesel fuel

• It is used in flex-fuel vehicles

• It is not used at all

What is the environmental benefit of using ethanol over gasoline?

• It produces more energy

• It reduces CO₂ emissions

• It is cheaper to produce

• It requires less land