Across
- 2. no more of that species found in the world
- 4. to continue to live or exist even through hard times
- 5. catching one species of fish so much that they are gone
- 7. too many of one species in an area
- 8. throwing out trash in rivers or on roadsides
Down
- 1. animals or plants about to become extinct
- 3. cutting down trees to build roads
- 6. fire fires started naturally or by careless people