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. All the members of one species in a particular area






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






3. When fish are caught faster than they can breed - causing the populatio to decrease






4. One way zoos and aquariums help increase wildlife populations






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






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






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






8. Building up not out






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






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






11. An amount of a renewable resource that can be harvested regularly without reducing the future supply






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






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






14. Using public transportation






15. 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






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






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






18. Bumps on the roots of certain plants






19. A nonliving part of an organism's habitat






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






21. Burning fossil fuels






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






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






24. Help improve the standard of living for residents






25. By increasing the need for people to drive






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






27. The loss of a natural habitat






28. Cooking oil - fuel - and medicines






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






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






31. Shift of population from countryside to cities






32. The number of different species in an area






33. Fires that are set by humans






34. Deals with biological hazards






35. Causes a cooling effect






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






37. Chemicals that cause cancer






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






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






40. Rising sea level






41. A series of events in which one organism eats another and obtains energy






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






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






44. Chemicals that causes harm to embryos and fetuses






45. Has the highest amount of species diversity






46. The mating of animals in zoos or wildlife preserves






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






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






49. Any substance that poses a chemical hazard






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