Fossil fuels

2. Petroleum is an example of this
8. Impacted by habitat disruption and pollution associated with fossil fuel activities.
10. A solid form of fossil fuels formed from fossilized plants
11. Resulting from fossil fuel-related emissions, impacting oceans and aquatic ecosystems.
12. An area in which a large number of items are produced. Common in cities and has high carbon emissions.
13. A large source of fossil fuel usage which many American cities depend on. A form of transportation.
15. A potent greenhouse gas released during the extraction and use of fossil fuels.
16. Depletion linked to certain emissions from fossil fuel activities.
17. A form of air pollution resulting from the combustion of fossil fuels.
18. Derived predominantly from fossil fuels, affecting global energy landscapes. Can also be obtained from renewable sources.

1. Gases released during the burning of fossil fuels, contributing to air pollution.
3. A general form of energy, including coal, oil, and natural gas.
4. Part of the carbon cycle in which fossil fuels are burned.
5. This is changing due to the emission of greenhouse gasses.
6. Burning fossil fuels causes this to boil, causing turbines to spin and producing energy.
7. The increase in the number and density of cities
9. Altered landscapes due to hydroelectric dams, sometimes associated with fossil fuel-related projects.
10. This cycle includes combustion, in which fossil fuels are burned.
14. Alternative energy sources crucial for reducing dependence on fossil fuels.