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






2. Rising sea level






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






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






5. An organism that breaks down wastes and dead organisms






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






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






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






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






10. The largest population that an area can support






11. The series of changes that occur in an area where the ecosystem has been disturbed - but where soil and organisms still exist






12. Illegal killing or removal of wildlife from their habitats






13. Building up not out






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






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






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






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






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






19. The highest level of biodiversity






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






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






22. This draws people from urban areas to rural areas






23. Chemicals that causes harm to embryos and fetuses






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






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






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






27. Habitat change and fragmentation






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






29. Provide wood






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






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






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






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






34. Any substance that poses a chemical hazard






35. Taking in carbon dioxide from the atmosphere during photosynthesis






36. Causes a cooling effect

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37. Making direct measurements






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






39. Chemical hazard that was once found in paint - young children are frequently tested for this






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






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






42. Chemicals that cause cancer






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






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






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






46. Manage - protect and reintroduce threatened and endangered species






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






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






49. A carnivore that feeds on the bodies of dead organisms






50. A disease that has appeared in the human population for the first time or that has existed for a while but is increasing rapidly and spreading around the world