Across
- 2. The action of conserving something, especially the natural environment
- 5. A combination of two or more substances that are not chemically combined
- 8. The substance dissolved in a given solution
- 9. An organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material
- 11. A process of separating two liquids with different boiling points
- 12. An animal that is hunted and killed by another for food
- 14. The natural environment where an organism lives, including all its physical and biological conditions
Down
- 1. A biological community of interacting organisms and their physical environment
- 3. The presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects
- 4. A substance formed from two or more elements chemically united in fixed proportions
- 5. A possible method for extracting metals from mixtures
- 6. An animal that naturally preys on others
- 7. Convert waste into reusable material
- 10. A substance that dissolves a solute, forming a solution
- 13. A process that separates materials based on the size of their particles