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. Habitat change and fragmentation






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






3. Causes a cooling effect

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4. Chemicals that cause cancer






5. Building up not out






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






7. Rising sea level






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






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






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






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






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






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






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






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






16. A living part of an organism's habitat






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






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






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






20. The organism that does the killing in a predation interaction






21. A consumer that eats only plants






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






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






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






25. Leaving a population






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






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






28. The mating of animals in zoos or wildlife preserves






29. A consumer that eats only animals






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






31. A virus or bacterium (organisms) that cause infectious diseases






32. Chemicals that causes harm to embryos and fetuses






33. Are carefully controlled






34. Transportation systems - communications systems - water services - power supplies - and schools






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






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






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






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






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






40. Shift of population from countryside to cities






41. Help improve the standard of living for residents






42. An organism that can make its own food






43. One way zoos and aquariums help increase wildlife populations






44. The number of different species in an area






45. The loss of a natural habitat






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






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






48. Can result in a decrease of property damage






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






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