Across
- 4. the ways in which we use land, such as for urban development, agriculture, industry, mining, and forestry
- 10. ecological information, passed down from generation to generation, that reflects human experience with nature gained over centuries
- 12. the destruction of habitats that usually results from human activities
- 13. the clearing or logging of forests without replanting
- 15. the introduction of chemicals, toxins, wastes, or micro- organisms into the environment in concentrations that are harmful to living things
Down
- 1. the ability of an ecosystem to sustain ecological processes and maintain biodiversity over time; using natural resources in a way that maintains ecosystem health now and for future generations
- 2. the dying out of a species; species become extinct when their numbers are reduced to zero
- 3. the use or extraction of a resource until it is depleted
- 5. the division of habitats into smaller, isolated fragments
- 6. the squeezing together of soil particles so that the air spaces between them are reduced
- 7. the spreading of urban developments (as houses and shopping centers) on undeveloped land near a city
- 8. damage to soil––for example, as a result of deforestation or the removal of topsoil from bare land by water and wind erosion
- 9. The process or industry of obtaining coal or other minerals from a mine
- 11. resource use
- 14. proving an area with new plants or trees