1. How Ecosystems Work
Chapter 5

2. Ecological Succession

3. Ecological Succession
A gradual process of change and replacement of the types of species in a community

4. Secondary Succession

5. Secondary Succession
A common type of succession that occurs on a surface where an ecosystem has previously existed

6. Carbon Dioxide
An atmospheric gas that increases when fossil fuels are burned off

7. Algal Bloom

8. Algal Bloom
Evidence of excessive fertilizer use

9. Climax Community

10. Climax Community
A final and stable community

11. Old-Field Succession

12. Old-Field Succession
A types of succession that occurs on an abandoned farmland

13. The Sun

14. What is the ultimate source of energy for almost all organisms except those living deep in the ocean near a thermal vent?
The Sun

15. Predator vs Prey

16. Which of the following might depend on a rabbit for its energy?
Grasshopper
Cayote
Cow
horse

17. Carnivore

18. A consumer that eats only producers is called a(n)
Carnivore

19. Food Chain

20. What term is used to describe a linear sequence in which energy is transmitted from one organism to the next as each organism eats another organism?
Food Chain

21. Food Web

22. What term is used to refer to the many feeding relationships that are possible in an ecosystem?
Food Web

23. Energy/Food Pyramid

24. Which organism would occupy the level on an energy pyramid with the most energy?
Bobcat
Bird
Grasshopper
carrot

25. Fossil Fuels

26. Where are fossil fuels located?
On the surface of the Earth
Deep Within the Earth
Beneath the ocean floor

27. Lichens

28. How do lichens contribute to primary succession?
Lichens begin to break down rock to form soil

29. Where would you most likely find nitrogen-fixing bacteria?
On the roots of legumes

30. Legumes

31. What type of vegetation would you expect to find on an abandoned farm that has been undistributed by humans for 150 years?
Short grasses
Shrubs
Young pine trees
Tall, mature oak trees

32. Consumers are organisms that
Eat only other animal species
Get solar or other energy indirectly
Are also known as self-feeders
Occupy an ecosystem’s lowest energy level

33. The energy consumed by organisms
Can be stored in fat and sugar molecules

34. Nitrogen Cycle

35. Which of these is a large reservoir of nitrogen that is usable by most organisms?
Soil
Atmosphere
Ocean
space