Test your basic knowledge |

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. Amount of land each person uses






2. Deals with biological hazards






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






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






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






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






7. The number of different species in an area






8. One way zoos and aquariums help increase wildlife populations






9. Plan to establish an 8000 kilometer long strip of land to rejoin fragments of tiger habitat






10. Moving into a population






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






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






13. Are carefully controlled






14. Leaving a population






15. The largest population that an area can support






16. Sex - weight - and health issues






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






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






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






20. An organism that can make its own food






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






22. The struggle between organisms to survive as they attempt to use the same limited resource






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






24. An example of a method for managing whole ecosystems and habitats






25. Watering crops

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






27. The pattern of overlapping food chains in an ecosystem






28. An environment that provides the things an organism needs to live - grow - and reproduce






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






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






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






32. A consumer that eats only plants






33. Burning fossil fuels






34. Resulted in suppression of all forest fires

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35. The loss of a natural habitat






36. A behavior or physical characteristic that allows an organism to live successfully in its environment






37. The study of the natural processes that occur in the environment and how humans can affect them






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






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






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






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






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






43. A nonliving part of an organism's habitat






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






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






46. Provide wood






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






48. Organism that carries pathogens






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






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