1. The many overlapping food chains in an ecosystem make up a(n)
a. feeding level
b. energy pyramid
c. niche
d. food web

2. d. food web

3. The step in the water cycle in which water vapor becomes liquid water is
a. precipitation
b. condensation
c. nitrogen fixation
d. recycling

4. b. condensation

5. The study of where organisms live is called
a. ecology
b. dispersal
c. biogeography
d. climatology

6. c. biogeography

7. The very slow movements of the continents is called
a. biogeography
b. continental drift
c. dispersal
d. creep

8. b. continental drift

9. Which of these consumers is a herbivore?
a. spider b. lion
c. deer
d. snake

10. c. deer

11. An organism that makes it’s own food is called
a. scavenger
b. consumer
c. decomposer
d. producer

12. d. producer

13. Consumers that eat both plants and animals are called
a. carnivores
b. herbivores
c. omnivores
d. scavengers

14. c. omnivores

15. In which process do producers use carbon from carbon dioxide to produce other carbon-containing molecules?
a. nitrogen cycle
b. water cycle
c. precipitation
d. photosynthesis

16. d. photosynthesis

17. If a kestrel eats a mouse that eats grass, the kestrel is a(n)
a. second-level consumer
b. decomposer
c. first-level consumer
d. producer

18. a. second-level consumer

19. What do producers release as a result of photosynthesis?
a. nitrogen
b. hydrogen
c. carbon dioxide
d. oxygen

20. d. oxygen

21. Which of these is NOT an example of precipitation?
a. groundwater
b. rain
c. snow
d. hail

22. a. groundwater

23. In an energy pyramid, which level has the most available energy?
a. second-level consumer
b. third-level consumer
c. producer level
d. first-level consumer

24. c. producer level

25. The first organism in a food chain is always a(n)
a. producer.
b. consumer.
c. carnivore.
d. herbivore.

26. a. producer

27. Organisms that were brought by humans from one part of the world to another are
a. native species
b. parasites
c. exotic species
d. endangered species

28. c. exotic species

29. The typical weather pattern in an area over a long period of time is called
a. climate
b. precipitation
c. weather
d. dispersal

30. a. climate

31. Some bacteria that fix nitrogen live in bumps on the roots of certain plants. These bumps are called
a. legumes b. starches
c. nodules d. droplets

32. c. nodules

33. Vultures, which feed on the bodies of dead organisms, are
a. first-level consumers
b. scavengers
c. producers
d. herbivores

34. b. scavengers

35. In which process do molecules of liquid water absorb energy and change into the gas state?
a. evaporation
b. condensation
c. precipitation
d. recycling

36. a. evaporation

37. The ocean prevents the Australian kangaroo from dispersing throughout the world. The ocean is an example of which type of limit to dispersal?
a. competition b. climate
c. a physical barrier
d. an exotic species

38. c. physical barrier

39. Which of the following is NOT an example of dispersal?
a. a squirrel living in a forest on a mountain
b. a dog bringing home sticky plant burs on its fur
c. an insect being carried down a river on a floating leaf

40. a. a squirrel living in a forest on a mountain

41. Organisms that capture the energy of sunlight to make food are called producers. A. True B. False

42. A. True

43. Second level consumers may be either carnivores or omnivores. A. True B. False

44. A. True

45. In an energy pyramid, the available energy increases at each feeding level compared to the level below. A. True B. False

46. B. False

47. Dandelions are a native species in the U. S
Dandelions are a native species in the U.S. because they were brought from Europe by the colonists. A. True B. False

48. B. False