science

4. : an organ in a spider in which several thin sheets of tissue filled with blood vessel are stacked like pages in a book
7. : a medicine that deactivates venom
9. : a tiny opening in an insects abdomen through which air enters the body
10. : a skin infection of animals causes by mites
13. : an external skeleton. The strong lightweight skeleton made primarily of protein and chitin that provides an arthropod with protection
14. : the process of arranging animals or other things into groups according to their similarities
16. : the change in form that occurs during the life of an insect. Can be complete or incomplete.
17. : an animal with a background
20. : a long moveable structure on the head of an invertebrate used to feel, taste, smell, or hear
21. : sensitive hairs responsible for a spider’s sense of touch
22. : the special tube like structure in a sider that excretes liquid silk when pressure is applied

1. : in spiders, an organ that produces silk
2. : an animal that is active at night
3. : an arthropod with two distinct body regions, eight legs, simple eyes, no wings, a book lung. Examples include spiders, scorpions, ticks, and mites
5. : the method by which young spiders sail through the air on silk strands that carry them from their place of birth to new homes
6. : a tough material that helps make up an arthropod external skeleton
8. : a skin infection causes by mites that affects humans
11. : a scientists who studies insects
12. : a body region of a spider or crustacean, like a head and thorax combined
15. : an animal without a backbone
18. : an insect’s breathing tube through which air travels
19. : an invertebrate that has an external skeleton jointed appendages and a segmented body