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DSST Environmental Science - 2

Subjects : dsst, science
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Manage - protect and reintroduce threatened and endangered species






2. The process of cutting down all the trees in an area at once






3. Sikhote-Alin mountains and the Siberian tigers living there are separated from other mountains by this






4. An organism that is killed and eaten by another organism






5. All the members of one species in a particular area






6. A consumer that eats only animals






7. A large area heavily populated like Miami - Florida or Toledo - Ohio






8. The most effective way of preserving biodiversity by protecting whole ecosystems






9. Species that are carried to a new location by people






10. The practice of protecting the environment






11. Energy from the sun would be reflected back into space






12. A species that influences the survival of many others in an ecosystem






13. An area with a large population of valuable ocean organisms






14. A region that has many different types of organism is described as having a high level of this






15. A relationship between two species in which one species benefits and the other is neither helped nor harmed






16. The highest level of biodiversity






17. The series of changes that occur in an area where no soil or organisms exist






18. By increasing the need for people to drive






19. Any substance that poses a chemical hazard






20. A resource that is either always available or is naturally replaced in a relatively short time






21. Chemicals that cause cancer






22. Businesses are arranged in a long row along a roadway - with no main community






23. An organism that can make its own food






24. Fires that are set by humans






25. The process of cutting down only some trees in an area






26. Concentrations of toxicants can be greatly multiplied with each step up the food chain






27. Habitat change and fragmentation






28. A natural pattern in which species diversity generally increases toward the equator






29. The reason why tigers living in warmer climates have thinner fur than tigers living in cool climates






30. Process of measuring the chance that an environmental hazard will cause harm






31. A relationship in which one organism lives on or in a host and harms it






32. The number of different species in an area






33. Anything in the environment that is used by people is called a natural resource






34. Trees - grass - crops - wetlands - water - building and pavements






35. Land that is sparsely populated and has few buildings or roads






36. A group of land ecosystems with similar climates and organisms






37. Loud noises in the air like jack hammers - loud car stereos - etc...






38. Organism that carries pathogens






39. The process of changing free nitrogen gas into a usable form






40. A species in danger of becoming extinct in the near future






41. The breaking of a habitat into smaller - isolated pieces






42. The most direct way in which biodiverstiy can provide a source of income






43. One way zoos and aquariums help increase wildlife populations






44. Using public transportation






45. Chemicals that causes harm to embryos and fetuses






46. A relationship between two species in which both species benefit






47. Global phenomenon that has caused some organisms to move toward the poles and to higher altitude






48. A consumer that eats both plants and animals






49. The disappearance of all members of a species from Earth






50. The form of transportation that uses the most energy per passenger mile







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Can you answer 50 questions in 15 minutes?


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