Across
- 1. environments
- 3. particular groups of living things
- 4. relating to or involving many levels
- 6. having many colors
- 8. having two colors
- 9. very small animal or plant life in an ocean
- 10. bothered
Down
- 2. having three colors
- 5. community of living things that are connected to one another and to the surroundings in which they live
- 7. worms that attach to the skin of animals and suck their blood