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. Illegal killing or removal of wildlife from their habitats






2. The pattern of overlapping food chains in an ecosystem






3. The amount of replacement is equal to the amount harvested






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






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






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






7. A species that is at risk of extinction






8. Bumps on the roots of certain plants






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






10. Making direct measurements






11. Has the highest amount of species diversity






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






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






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






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






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






17. One way zoos and aquariums help increase wildlife populations






18. The study of how living things interact with each other and their environment






19. The number of different species in an area






20. Increase the stability of an ecosystem






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






22. Moving into a population






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






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






25. A nonliving part of an organism's habitat






26. Any substance that poses a chemical hazard






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






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






29. Refers to an increase in Earth's average surface temperature






30. A consumer that eats both plants and animals






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






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






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






34. Contamination of land - water - or air






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






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






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






38. The loss of a natural habitat






39. A form of decision-making concerned with the allocation and conservation of natural resources






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






41. Resulted in suppression of all forest fires

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






43. A living part of an organism's habitat






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






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






46. Chemicals that causes harm to embryos and fetuses






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






48. Deals with biological hazards






49. Organism that carries pathogens






50. The largest population that an area can support