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. Deals with biological hazards






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






3. Contamination of land - water - or air






4. Watering crops


5. Burning fossil fuels






6. A consumer that eats both plants and animals






7. An organism that can make its own food






8. Amount of land each person uses






9. Chemicals that causes harm to embryos and fetuses






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






11. The loss of a natural habitat






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






13. Chemicals that cause cancer






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






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






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






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






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






19. Shift of population from countryside to cities






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






21. Cooking oil - fuel - and medicines






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






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






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






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






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






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






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






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






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






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






32. Increase the stability of an ecosystem






33. A nonliving part of an organism's habitat






34. Causes a cooling effect


35. Manage - protect and reintroduce threatened and endangered species






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






37. Are carefully controlled






38. A living part of an organism's habitat






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






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






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






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






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






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






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






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






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






48. Has the highest amount of species diversity






49. All the members of one species in a particular area






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