unit 6 vocabulary

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Across
  1. 2. a predatory animal with 5 or more rays extending from a central disc
  2. 5. sharp extensions on top of a sea stars body that are used for protection
  3. 7. an organism that eats other organism for energy
  4. 9. organisms that eat other organisms
  5. 13. an entrance for water into a sea stars body
  6. 15. the place where land and water meets
  7. 16. the point when seawater rises to its highest level during a tides cycle
Down
  1. 1. all of the members of a species within a particular area
  2. 3. a community of different species that depend on interacting with each other and their physical environment for survival
  3. 4. organisms that break down organic waste and fees on the nutrients
  4. 6. drying due to the removal of water
  5. 8. organisms that capture energy directly from the sun to make their own food
  6. 10. any factor that reduces the ability of an organism to survive
  7. 11. the alternating rise and fall of the sea with respect to land
  8. 12. a visual that shows the network of food chains in an ecosystem
  9. 14. the point when seawater retreats to its lowest level during a tide cycle