1. Adaptation

2. Amphibian

3. A special trait that helps an organism survive.

4. A cold-blooded vertebrate that spends part of its life in water and part of its life on land.

5. Arthropod

6. Camouflage

7. An invertebrate with jointed legs and a body that is divided into sections.

8. An adaptation by which an animal can hide by blending in with its surroundings.

9. Class

10. Cold-blooded

11. A smaller group within a phylum. Classes are made up of smaller groups called orders.

12. An animal that cannot control its body temperature.

13. Community

14. Consumer

15. The living part of an ecosystem.

16. Any organism that eats the food producers make, or that eats other consumers.

17. Decomposer

18. Ecology

19. An organism that breaks down wastes and the remains of other organisms.

20. The study of how living and nonliving things interact.

21. Ecosystem

22. Endoskeleton

23. The living and nonliving things in an environment, and all their interaction.

24. An internal supporting structure.

25. Exoskeleton

26. Extinct

27. A hard covering that protects an invertebrates body.

28. An organism no longer alive on Earth.

29. Family

30. Food Chain

31. A smaller group of organisms within a class.

32. The set of steps in which organisms get the food they need to survive.

33. Genus

34. Habitat

35. A group made up of two or more very similar species.

36. The home of an organism.

37. Herbivore

38. Invertebrate

39. A consumer that eats only plants.

40. An animal without a backbone.

41. Kingdom

42. Mammal

43. The largest group into which an organism can be classified.

44. A warm-blooded vertebrate with hair or fur.

45. Omnivore

46. Order

47. A consumer that eats both plants and animals.

48. A smaller group within a class.

49. Organism

50. Overpopulation

51. A living thing that carries out five basic life functions on its own.

52. A depletion of resources that occurs when too many of at least one kind of living thing inhabits an ecosystem.

53. Population

54. Phylum

55. One type of organism living in an area.

56. A large group within a kingdom.

57. Producer

58. Reptile

59. An organism, such as a plant, that makes food.

60. A cold-blooded vertebrate that lives on land and has a backbone, an endoskeleton, and waterproof skin with scales or plates.

61. Species

62. Trait

63. The smallest group into which an organism is classified.

64. A characteristic of a living thing.

65. Vertebrate

66. Warm-blooded

67. An animal with a backbone.

68. An animal with a constant body temperature.