| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | fossil fuels | Earth science community | Fossil fuels such as coal, oil, and natural gas are formed from the remains of ancient organisms | 1 |
| 2 | fossil fuels | Earth scientist | Fossil fuels are a non-renewable energy source formed from ancient organic matter and contribute to climate change. | 1 |