Across
- 3. The act of reasoning from factual knowledge or evidence.
- 4. The word for electronic waste.
- 6. A technique to conserve soil that changes the crops grown in a plot eat year, replenishing the soil's nutrients is called a crop _______
- 8. What happens to most of the rain water that falls in a natural area.
- 10. Breaks down dead animals and releases nutrients in the ecosystem
- 11. An area of land that intercepts and grains precipitation through a particular river system or group of river systems.
- 14. What is the gas produced by the rotting of organic materials in a landfill called
- 15. Carbon rich organics like dried leaves and grass
- 16. What is the term that means the variety of life on earth.
- 18. The first stage of waste-water treatment to remove soilic garbage from water is through a ________.
- 19. All members of all species living in an ecosystem.
- 20. The land in which crops can be grown.
- 21. Nitrogen rich organics like kitchen scraps and tree grass clippings are called
- 22. The final thing added to waste water to further disinfect water.
Down
- 1. The method that animals are trapped, marked, and then released to determine the estimated population is called: mark-return ______
- 2. Only births and deaths are possible in a ____ population
- 5. Another name for a producer; an organism which produces it's own food.
- 7. The total amount of chemical administered or taken by an organism.
- 9. Soil ________ is determined from the average size of pores
- 12. The term that refers to a specific level in the food chain
- 13. What are the layers that soil develop into?
- 17. A surface where it's harder for the precipitation to sink in is called a(n) ________ surface.
- 19. The relationship between a set of factors (causes) and a phenomenon (effect).