Across
- 5. To inhale and exhale
- 6. Animals that have backbones
- 10. Animals whose body heat changes with the temperature of their environment
- 11. The ability to do work. An example is heat energy
- 12. Animals who keep the same body temperature
- 15. The grouping of plants or animals by similar features
- 20. An insect that is changing from a larva to an adult
- 21. A claw of a bird of prey
- 25. The things around something
- 27. Animals such as frogs, toads, and salamanders
- 28. To become larger and take up more space
- 29. A scale of temperature
- 30. To shed, as some animals do in their skin, feathers or fur
- 33. An instrument that makes small things look large
- 34. An early stage of an insect's life
- 37. A tank for living fish
- 38. The natural surroundings of where a plant or animal lives.
- 39. The last of the three parts of an insect, the segments of an insect's body behind the thorax
Down
- 1. A small animal that lives in dead wood
- 2. Between hot and cold
- 3. To look, see and learn
- 4. A design
- 7. An instrument that measures the temperature of something
- 8. A scale of temperature
- 9. A complete change in form that takes place in the life cycle of some animals
- 13. When a liquid, such as water, turns to vapor
- 14. An animal who eats dead animals
- 16. A long feeler on an insect
- 17. To increase
- 18. To adjust or become suitable for an environment
- 19. The middle part of an insect's three-part body
- 22. Organs used for breathing
- 23. A measure of heat
- 24. A tube that carries body fluid, such as blood
- 26. A very young frog that still lives in water
- 30. Animals who have hair or fur, give birth to their young and make milk for their young
- 31. Liquid water
- 32. A period in metamorphosis
- 35. A full-grown animal or plant
- 36. To stay alive
