1. An assemblage of parts, and their relationships, forming a whole.

2. System

3. A system which exchanges matter and energy.

4. Open System

5. A stable ecosystem will be in. (i)
A stable ecosystem will be in (i) equilibrium, achieved largely through mechanisms of (ii) . . .feedback.

6. i) Steady-state
ii) Negative

7. The amount of energy that is available to living things decreases as it is transformed and passed along food chains.

8. Second Law of Thermodynamics

9. The amount of energy that is available to living things decreases as it is transformed and passed along food chains.

10. Second Law of Thermodynamics

11. Provide the name for the organisms in the storage box labelled X.

12. Carnivores

13. The gain in energy or biomass per unit time after allowing for respiration losses.

14. Net Productivity

15. What is the net productivity of the decomposers in kJ m-2 yr-1?

16. 3050

17. The graph above shows changes in the biomass, productivity and respiration of a community during the process of forest succession.
During which stage is the mean net productivity the lowest?

18. Stage IV

19. The total quantity of organic matter produced by photosynthesis per unit area per unit time is the…

20. Gross Primary Productivity

21. A collection of ecosystems sharing similar climatic conditions.

22. Biome

23. What a species does in its environment, including its job and all its interactions.

24. Ecological Niche

25. A lion eats a zebra. What type of population interaction is this an example of?

26. Predation

27. A group of organisms of the same species living in a given area.

28. Population

29. The maximum number of species that a given area can support.

30. Carrying Capacity

31. What is a typical characteristic of a K-strategist?

32. Reproduce late. Reproduce few offspring. Longer life-span.

33. Lines I, II and III are survivorship curves for three different populations in an ecosystem. Which row best describes the nature of the three populations? (K-strategists, R-strategists, Intermediate strategists)

34. R, Intermediate, and K (I, II, III)

35. A stable community of organisms produced as a result of ecological succession.

36. Climax Community