Across
- 2. the shedding of the exoskeleton
- 6. animals that feed on living animals or plants and usually do not cause the death of the host
- 7. animals that have backbones
- 9. of the oceans and seas caused by the attraction of the sun and moon
- 11. microscopic plants and animals that float or drift in the sea or freshwater, and are the base of many sea food chains
- 12. the alternate rise and fall of the
- 13. animals that feed on seaweed and other marine plants
Down
- 1. animals that actively pass water containing suspended food through a filtering device in their mouth which allows the water to pass through but traps food particles to be eaten
- 3. small, water-filled fleshy tubes used by sea stars and other echinoderms for locomotion, feeding, breathing, and seeing
- 4. animals that feed on decaying plant and animal matter
- 5. the physical place where an organism lives
- 8. animals that are eaten by other animals
- 10. to escape or get away