Across
- 2. the purposeful clearing of forested land
- 6. a group of living organisms consisting of similar individuals capable of exchanging genes
- 7. process that converts organic materials into a nutrient-rich, biologically-stable soil amendment or mulch through natural decomposition
- 8. the long-term warming of the planet's overall temperature
- 9. the natural home or environment of a plant, animal, or other organism
- 10. the process of collecting materials that would otherwise be thrown away as trash and turning them into new products
Down
- 1. a type of organism that is threatened by extinction
- 3. the surroundings or conditions in which a person, animal, or plant lives or operates
- 4. a layer of gas and suspended solids extending from the Earth's surface up many thousands of miles
- 5. able to be maintained at a certain rate or level