XII EVS CH 1&2 Revision

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Across
  1. 4. When succession occurs in salt water or saline soil it is known as _____.
  2. 7. ESV stands for Ecosystem services ______.
  3. 8. The destruction of an ecosystem, causing it’s entire loss is called_______.
  4. 9. Ecological succession that is occurring in a place that was initially inhabited but then destroyed is known as _____ succession.
  5. 14. Another word for soil is ________.
  6. 15. Balance in an ecosystem is called ______.
  7. 18. The initial establishment of a plant community in the new area is known as ____.
  8. 20. Ecological succession that is occurring in a previously uninhabited place is known as ______ succession.
  9. 21. Succession initiated by changes in organisms within the community is known as _____ succession.
  10. 23. Genetic diversity is a type of ____ service.
  11. 24. Food, fuel and medicines are classed as ________ services.
  12. 27. When the species in a growing community increase and come close to each other it is called ________.
  13. 28. We are uncertain about all the values an ecosystem may have in the future, this is _____ value.
  14. 31. The number of different species in an ecosystem is called _______.
  15. 32. The intermediate stage in ecological succession is known as a _____ community.
  16. 33. Early stages of ecological succession are called ____ stages.
Down
  1. 1. Value for an ecosystem, even if we don’t use it is called _____ value.
  2. 2. Value for an ecosystem service that will be passed on to future generations is called ______ value.
  3. 3. Ecotourism is a type of ______ service.
  4. 5. The transitional space between communities is called __________.
  5. 6. The formation of a stable ecosystem over time is known as ecological ________.
  6. 10. Value for an ecosystem to make resources available to others in our generation is _______ value.
  7. 11. Agriculture, mining, and logging are examples of ______ disturbances.
  8. 12. Cyclones, earthquakes and wildfires are examples of _______ disturbances.
  9. 13. We determine the economic value for an ecosystem service that has direct influence on the price of other things is _________ pricing method.
  10. 16. Purification of water is a type of _____ service.
  11. 17. Succession initiated by changes in the environmental conditions is known as _____ succession.
  12. 19. When succession occurs in an aquatic habitat it is known as ______.
  13. 22. WTP stands for ________ to Pay.
  14. 25. When plants dominate early stages of succession it is called ______ succession.
  15. 26. PES stands for _________ for Ecosystem services.
  16. 29. The final stage of ecological succession is called _______ community.
  17. 30. When succession occurs on dry bare land it is known as ______.