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 largest population that an area can support






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






3. Amount of land each person uses






4. An organism that breaks down wastes and dead organisms






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






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






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






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






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






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






11. A consumer that eats only plants






12. Sex - weight - and health issues






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






14. Chemicals that cause cancer






15. A nonliving part of an organism's habitat






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






17. Using public transportation






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






19. The mating of animals in zoos or wildlife preserves






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






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






22. The study of the natural processes that occur in the environment and how humans can affect them






23. A consumer that eats only animals






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






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






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






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






28. Bumps on the roots of certain plants






29. 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






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






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






32. Contamination of land - water - or air






33. Causes a cooling effect






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






35. Burning fossil fuels






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






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






38. Has the highest amount of species diversity






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






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






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






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






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






44. The number of different species in an area






45. Moving into a population






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






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






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






49. A species that is at risk of extinction






50. Taking in carbon dioxide from the atmosphere during photosynthesis