Across
- 3. the surroundings or conditions in which a person, animal, or plant lives or operates
- 5. an animal that feeds on dead or decaying material
- 8. organism that breaks down dead organic material
- 11. an animal that feeds on plants
- 13. an individual animal, plant, or single-celled life form
- 16. a group of people or things that has certain characteristics in common
- 18. of or having to do with the ocean
- 19. the act or process of trying to get or win something others are also trying to get or win
- 20. an animal that is hunted and killed by another for food
Down
- 1. tiny animals and plants that drift or float in oceans and lakes
- 2. the result of an action, a condition, or a decision
- 4. an organism that eats mostly meat, or the flesh of animals
- 6. a person who studies living things, both plants and animals
- 7. eat, drink, or ingest
- 9. to notice or discover something
- 10. is a large area of flat, grassy land
- 12. an animal or person that eats food of both plant and meat
- 14. is an animal that eats other animals
- 15. to become smaller or less until very few or little is left
- 17. microscopic organisms not visible with the naked eye