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






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






3. The mating of animals in zoos or wildlife preserves






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






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






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






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






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






9. Deals with biological hazards






10. Fires that are set by humans






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






12. Watering crops






13. The clearing of a forest and replacing it with another land use






14. Any substance that poses a chemical hazard






15. Can result in a decrease of property damage






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






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






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






19. Provide wood






20. A species that could become endangered in the near future






21. Leaving a population






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






23. Shift of population from countryside to cities






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






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






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






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






28. Has the highest amount of species diversity






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






30. Pollution from a factory near your school






31. A species that is at risk of extinction






32. An organism that can make its own food






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






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






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






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






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






38. Resulted in suppression of all forest fires






39. Burning fossil fuels






40. One way zoos and aquariums help increase wildlife populations






41. The highest level of biodiversity






42. Chemicals that causes harm to embryos and fetuses






43. 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






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






45. Increase the stability of an ecosystem






46. Bumps on the roots of certain plants






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






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






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






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