Across
- 1. Vigorous activity; power.
- 3. To treat something like paper in a special way so that it can be used again.
- 5. A group of animals or plants that have certain characteristics in common that can interbreed.
- 8. Having to do with or like a nucleus or nuclei.
- 11. Having to do with or coming from the sun.
- 13. A getting rid of something, as by throwing away.
- 14. The act or condition of outlasting or surviving.
Down
- 2. Coming from nature; not artificial
- 3. A supply of something that can be used or drawn on.
- 4. All the surroundings and conditions that have an effect on the development of a person, animal, or plant.
- 6. The science of developing and managing forests.
- 7. Animals and plants that live in the natural environment.
- 9. The act of protecting or preserving from loss, injury, decay, or waste.
- 10. The study of the relationship between living things and their environment.
- 12. To make or become pure.