• What does it mean if a source of energy is nonrenewable?

• Where is crude oil found today?
• Which fuel creates the most air pollution when burned?
• When were fossil fuels formed?
• How can fossil fuels be harmful to our earth?
• Is petroleum the most abundant fossil fuel in the U.S.? Why or why not?
• Explain what happens to the air when fossil fuels are burned.

- Nonrenewable sources of energy are sources that cannot be easily replaced or replenished, such as fossil fuels which take millions of years to form.

- Crude oil is found in underground reservoirs or wells located in various countries around the world, with significant reserves in the Middle East, North America, and Russia.
- Coal is known to create the most air pollution when burned, releasing pollutants such as sulfur dioxide, nitrogen oxides, and particulate matter.
- Fossil fuels were formed millions of years ago during the Carboniferous period.
- Fossil fuels can be harmful to the earth by contributing to air and water pollution, causing habitat destruction through mining and drilling, and releasing greenhouse gases that contribute to climate change.
- Yes, petroleum (crude oil) is the most abundant fossil fuel in the U.S., as it is used for transportation, heating, and electricity generation.
- When fossil fuels are burned, they release carbon dioxide and other pollutants into the air, contributing to air pollution and climate change.