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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. Relieving a nation from repaying some of the money it owes other nations in exchange for protecting its biodiversity






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






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






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






5. A natural resource that is not replaced in a useful time frame






6. One way zoos and aquariums help increase wildlife populations






7. A series of events in which one organism eats another and obtains energy






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






9. Rising sea level






10. Bumps on the roots of certain plants






11. Can result in a decrease of property damage






12. Building up not out






13. The disappearance of a particular population from a given area - but not from the entire species globally






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






15. A group of organisms that are physically similar and can mate with each other and produce offspring that can also mate and reproduce






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






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






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






19. Sex - weight - and health issues






20. The largest population that an area can support






21. A living part of an organism's habitat






22. Viruses - bacteria and other organisms in the environment that harm human health






23. The amount of carbon dioxide emissions for which an individual or group is responsible






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






25. A species that is at risk of extinction






26. An organism that breaks down wastes and dead organisms






27. Have a greater sensitivity to environmental hazards than any other group






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






29. Has the highest amount of species diversity






30. A consumer that eats both plants and animals






31. The role of an organism in its habitat - or how it makes its living






32. A close relationship between two species that benefits at least one of the species






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






34. Help improve the standard of living for residents






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






36. Causes a cooling effect

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37. The highest level of biodiversity






38. Water vapor and carbon dioxide that trap heat near the earth






39. Chemicals that cause cancer






40. An organism that can make its own food






41. The loss of a natural habitat






42. The probability that a hazard will cause a harmful response






43. Are carefully controlled






44. An organism that obtains energy by feeding on the other organisms






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






46. The pattern of overlapping food chains in an ecosystem






47. Any substance that poses a chemical hazard






48. Soil - fresh water - wild animals - and timber






49. Deals with biological hazards






50. Chemicals that causes harm to embryos and fetuses