Across
- 3. – Planting trees to replace forested areas that have been cut down or destroyed.
- 4. – Liquid waste or sewage discharged into a river or the sea.
- 6. – The variety of all the different species of organisms on Earth, or within an ecosystem.
- 7. – Meeting the needs of the present without compromising the ability of future generations.
- 8. – The introduction of harmful substances into the environment, negatively affecting organisms.
- 10. – Partially decayed plant matter found in bogs, used as fuel but a cause of carbon dioxide emissions when burned.
- 13. – The process of removing salt from seawater to produce potable water.
- 14. – The removal of large areas of trees, often resulting in habitat loss and increased carbon dioxide levels.
- 15. – The protection and management of ecosystems and biodiversity to prevent damage.
- 17. – The process of extracting metals from their ores by heating.
- 18. – The process of killing harmful microbes in filtered water, making it potable.
- 19. – The use of bacteria or other microorganisms to extract metals from ores.
Down
- 1. – The process by which excess nutrients (e.g., from fertilisers) enter water, causing algal blooms and oxygen depletion.
- 2. – The disposal of waste by burying it, typically in large designated areas.
- 3. – The process of converting waste materials into new products to reduce resource consumption.
- 5. – The build-up of toxic substances in the tissues of organisms over time.
- 9. – Lowering the amount of resources consumed to decrease waste and pollution.
- 11. – The use of plants to absorb metal compounds from soil, which are later harvested and processed.
- 12. – Water that is safe for humans to drink, containing low levels of salts and microbes.
- 16. – The process of removing solid particles from a liquid, often used in water purification.