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. A relationship between two species in which both species benefit






2. Causes a cooling effect

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3. The highest level of biodiversity






4. This draws people from urban areas to rural areas






5. An organism that breaks down wastes and dead organisms






6. 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






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






8. Burning fossil fuels






9. A consumer that eats both plants and animals






10. An organism that is killed and eaten by another organism






11. Rising sea level






12. Have a greater sensitivity to environmental hazards than any other group






13. Provide wood






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






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






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






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






18. Chemicals that causes harm to embryos and fetuses






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






20. The pattern of overlapping food chains in an ecosystem






21. The largest population that an area can support






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






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






24. Process of measuring the chance that an environmental hazard will cause harm






25. Are carefully controlled






26. Fires that are set by humans






27. The practice of protecting the environment






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






29. A species that is at risk of extinction






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






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






32. A close relationship between two species that benefits at least one of the species






33. Pollution from a factory near your school






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






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






36. Chemicals that cause cancer






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






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






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






40. One way zoos and aquariums help increase wildlife populations






41. A living part of an organism's habitat






42. Bumps on the roots of certain plants






43. The number of different species in an area






44. Manage - protect and reintroduce threatened and endangered species






45. An organism that can make its own food






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






47. Resulted in suppression of all forest fires

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48. A consumer that eats only animals






49. Watering crops

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