Across
- 1. Saturn's moon _________ has oceans of liquid natural gas.
- 5. The Perseid meteor shower is named after this Greek hero who slayed Medusa.
- 6. 70% of the matter in the universe is made up of __________ energy.
- 8. These pets have a total of 64 muscles in their ears.
- 9. These fish, that live in rocky habitats, are some of the laziest fish in the ocean.
- 10. These mollusks on the beaches of Nantucket are hermaphrodites, so they can change genders.
- 11. These crustaceans are biologically immortal and can live until their claws become too heavy to pick up.
- 13. An adult of these bivalve mollusks can filter 50 gallons of water a day.
Down
- 2. this type of spider can survive up to 2 years without food.
- 3. These birds that live on Nantucket are labeled as "near threatened" on the Endangered Species List.
- 4. These sharks can swim in both saltwater and freshwater.
- 7. Humans share 70% of their DNA with these gastropods.
- 12. A ______ is the only mammal that can fly.