Across
- 3. : A gaseous fossil fuel used for heating and electricity
- 4. : Energy from the sun
- 6. : Energy generated by moving air
- 7. : Total greenhouse gases produced by a person or activity
- 10. : A liquid fossil fuel used for fuel and plastics
- 13. : When resources are limited
- 15. : A resource that cannot be replaced within a human lifetime
- 17. : Able to be maintained without harming future generations
- 18. : Large‑scale removal of trees
- 21. : Heat energy from within the Earth
- 23. : Coal, oil, and gas formed from ancient organisms
- 24. : Energy from organic materials
Down
- 1. : Protecting and managing resources wisely
- 2. : Electricity produced from flowing water
- 5. : A resource that can naturally replenish over time
- 8. : Harmful substances entering the environment
- 9. : Using an item again instead of throwing it away
- 11. : A resource that cannot be used up
- 12. : A black rock burned for energy
- 14. : Anything used to meet human needs
- 16. : System of production, consumption, and trade
- 17. : Using resources in a way that supports long‑term balance
- 19. : Controlling and organizing resource use
- 20. : Turning waste materials into new products
- 22. : A community of living things and their environment