Across
- 3. Two types of animals that live together for mutual benefits
- 4. are mobile aquatic organisms that develop into nonmotile adults
- 6. relationship between two organisms in which one feeds on the other without killing it
- 8. animals that live part of their lives in freshwater and the other remaining time on land
- 9. When one animal eats another animal
- 10. refers to a plant or animal that lives in, on, or with another
- 13. Include all areas between dry upland and open-water
- 15. are ecological systems influenced by brackish or salty water
- 16. replace their outer shells as they grow.
Down
- 1. When different species of wildlife compete for the same food supply, cover, nesting sites, or breeding sites
- 2. aquatic animals with a shell or shell-like extension
- 5. animals with backbones
- 7. an animal that feeds on other animals
- 11. in the production of plants and animals in water environments
- 12. occurs when heritable traits that increase an organism's chances for survival are passed from one generation to the next
- 13. includes animals that are adapted to live in a natural environment without the help of humans.
- 14. an animal being eaten by the predator