12.2

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Across
  1. 3. crustaceans have what kind of eyes
  2. 7. appendage to crush food
  3. 8. crusteacens have what kind of circulatory systems
  4. 9. majority of crustaceans use this kind of fertilization
  5. 10. flipper-like appendages
  6. 11. keystone species that make up the largest oceanic biomass
Down
  1. 1. a large group of arthropods,2nd to insects, have an exoskeleton plate and flipper-like appendages
  2. 2. species that has a strategic placement on the food chain
  3. 4. crustaceans reproduce with what kind of reproduction
  4. 5. single exoskeletal plate that covers tcephalothoraxrax
  5. 6. claws