Across
- 7. are environmental conditions that keep a population from increasing in size and help balance ecosystems
- 8. group of organisms that have certain characteristics in common and are able to interbreed
- 9. when its population is so low that it is nearly extinct
- 10. refers to the disappearance of an entire species from earth
Down
- 1. the major cause of wildlife depletion
- 2. variety of wildlife in an area
- 3. if a species is no longer found in the area it once inhabited but still found elsewhere in the wild
- 4. if a species remains alive in captivity or in other human controlled situations
- 5. process by which a body of water becomes enriched in dissolved nutrients
- 6. clearing or removing of a forest to include cutting of all tress mostly for urban use