Across
- 2. the respiratory system for an insect
- 4. the thorax and the head together are called what?
- 6. a series of stages in which the insect changes and grows.
- 8. another name for the yellow scorpion
- 10. how many pairs of walking legs do crustaceans have
- 12. some arthropods like crustaceans and insects rely on ___________ for visual information about their environments
- 13. what are the most abundant animals in the world?
- 14. the members of the largest phylum in kingdom Animalia
- 15. chemicals released by females to attract a mate
Down
- 1. appendages near the mouths of crustaceans used to crush their food
- 3. arthropods have ___________ ___________ to enable movement
- 5. these arthropods are ecosystem engineers.
- 7. the spider is a/an _________________
- 9. almost all animals have this
- 11. tracheae open to the outside through a series of small pores on the sides of the insect