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Biodiversity. Threats to Biodiversity. Conserving Biodiversity. Human Impacts. Actual Test Questions. 100. 100. 100. 100. 100. 200. 200. 200. 200. 200. 300. 300. 300. 300. 300. 400. 400. 400. 400. 400. 500. 500. 500. 500. 500.

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  1. Biodiversity Threats to Biodiversity Conserving Biodiversity Human Impacts Actual Test Questions 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500

  2. When the last member of the species dies

  3. Extinction

  4. Thee number of different species in a biological community

  5. Species diversity

  6. Maintaining ______ has a direct economic value to humans

  7. Biodiversity.

  8. Why is it important to maintain biodiversity for medical reasons?

  9. Humans rely on plants for medicine

  10. The process of transferring genes is known as

  11. Genetic Engineering

  12. An event in which a large amount of all living species become extinct in a relatively short time

  13. Mass extinction

  14. All the materials and organisms found in the biosphere

  15. Natural resources

  16. The excessive use of species that have economic value is known as

  17. Overexploitation

  18. The gradual process of species becoming extinct is known as

  19. Background extinction

  20. Occurs when fertilizers, animal waste, sewage, or other substances rich in phosphorus flow in waterways causing extensive algae growth

  21. Eutrophication

  22. Resources that are replaced faster than they are consumed are known as

  23. Renewable resources

  24. Using resources at a rate at which they can be replaced or recycled is known as

  25. Sustainable use

  26. Species that are found only in specific geographic area

  27. Endemic species

  28. The use of living organisms such as prokaryotes, fungi, or plants to detoxify a polluted are is known as

  29. Bioremediation

  30. Adding natural predators to a degraded ecosystem is known as

  31. Biological augmentation

  32. Throughout history, humans have lived primarily as what types of groups?

  33. Hunters/gatherers

  34. What layer of the atmosphere contains the ozone layer

  35. Stratosphere

  36. What specific atom is the main cause of the greenhouse effect

  37. CO2

  38. The two different sources of water pollution are known as

  39. Point and Non-point

  40. The accumulation of chemicals in organisms at higher trophic levels of a food chain is known as what

  41. Biomagnification

  42. True or false: the best way to restore a damaged ecosystem is to introduce predators to control the population of endemic species

  43. False

  44. The cheetah population was around 100,000 in 1900. Today, fewer than 12,000 cheetahs remain. What type of natural recources are cheetahs considered?

  45. Nonrenewable

  46. The variety of ecosystems that are present in the biosphere is called

  47. Ecosystem Diversity

  48. The different environmental conditions that occur along the boundaries of an ecosystem are described by ecologists as ________

  49. Edge Effects

  50. Why is sandstone classified as a nonrenewable resource

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