EMT 201 CBT PRACTICE

1. The thin layer where life exists on earth is called:

2. The zone of the atmosphere with ionized particles is:

3. The type of interaction where species benefit mutually is:

4. The major agents responsible for chemical weathering are:

5. A layer of rocks formed by the cooling and solidification of molten material is classified as:

6. The principle stating that current physical and biological processes have operated since the earth's origin is called:

7. The fundamental unit that facilitates interaction between biotic and abiotic components is called:

8. The role of decomposers in an ecosystem is to:

9. A stable ecosystem with intricate food webs is characterized by:

10. Forest fires affecting vegetation and soil stability is an example of:

11. The ecosystem’s productivity is positively correlated with:

12. The cyclic transfer of energy, water, and nutrients in the biosphere occurs through:

13. The process by which solar energy is converted into chemical energy by green plants is:

14. The cycling of inorganic and organic substances in the biosphere is called:

15. The first principle of trophic levels states that:

16. In the hydrosphere, the percentage of water locked in the lithosphere is approximately:

17. The main driving force of the ecosystem is:

18. The term used to describe the sequential changes in vegetation communities over time is:

19. An example of a trophic level where energy flow decreases due to respiration losses is:

20. Soil formation caused by plant roots growing in rock fissures is an example of:

21. The concept introduced by UNESCO to conserve biodiversity is:

22. The layer of the atmosphere that contains the ozone layer is:

23. According to E.P. Odum, ecosystem stability increases with:

24. A mature ecosystem with high species diversity is known for its:

25. A natural process introducing inheritable variations in species is:

26. A climax community in succession represents:

27. The physical environment and living organisms collectively form the:

28. The troposphere extends up to approximately:

29. The finite nature of earth's resources emphasizes the principle of:

30. The zone of the atmosphere where temperatures may drop to -90°C is:

31. The ecological concept that allows the system to return to stability after external changes is called:

32. A food chain begins with:

33. The rapid decline in biodiversity due to habitat destruction is a result of:

34. An ecosystem modified by human activity is referred to as:

35. The ozone layer protects life on earth by:

36. A process involving gradual accumulation and hardening of sediments forms:

37. A type of rock formed by heat and pressure altering existing rocks is called:

38. The climatic condition regulated by the atmosphere to sustain life is mainly due to:

39. The transfer of energy in an ecosystem follows:

40. The ability of an ecosystem to resist or recover from disturbances is called: