Earthly Scavenger Hunt

4. of or relating to the sun
5. objects strewn or scattered about
7. a form of oxygen that is blurry, stinky, used for cleaning supplies, and is renewable
10. to keep alive or in existence
12. the branch of biology dealing with the relations and interactions between organisms and their environment, including other organisms
13. to use or manage natural resources wisely
14. a system, or group of interconnected elements, formed by the interaction of a community of organisms with their environment
17. capable of being supported or upheld, as by having its weight borne from below
19. that has ended or died out

1. to treat or process used or waste materials so as to make suitable for reuse
2. to make foul or unclean, especially with harmful chemical or waste products
3. the gaseous envelope surrounding the Earth
6. a low area of land that is built up from deposits of solid refuse in layers covered by soil
8. the aggregate of surrounding things, conditions, or influences
9. something that is discharged
11. nothing of a class of chemical compounds that formerly comprised only those existing in or derived from plants or animals, but that now includes all other compounds of carbon
15. a mixture of various decaying organic substances, as dead leaves or manure, used for fertilizing soil
16. the natural environment of an organism
18. to process used goods or waste material so as to produce something that is often better than the original