Across
- 3. products which can be used again
- 7. chemicals given to the plants with the intention of growth
- 8. what chemical is contained in a spray can?
- 9. kind of rain that is harmful to the enviroment
- 10. the mountain with a large circular hole on the top through which lava gases
- 11. overall [rising] temperature on a planet
- 12. the variety of plant and animal life in the world
- 14. group of animals, having no living members
- 15. action of surface processes
- 18. the trapping of the sun's warmth in a planet's lower atmosphere
Down
- 1. what it is called when water is polluted with trash?
- 2. absorbs most of the ultraviolet radiation reaching the earth from the sun
- 4. plants give off oxygen and absorb...
- 5. sorting trash to specific bins
- 6. what is color of a bin for paper?
- 13. tropical forest
- 16. when animals are on the edge of exctincion
- 17. a process making a lot of damage