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






2. The mating of animals in zoos or wildlife preserves






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






4. By increasing the need for people to drive






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






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






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






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






9. The pattern of overlapping food chains in an ecosystem






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






11. Contamination of land - water - or air






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






13. 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






14. The number of different species in an area






15. The highest level of biodiversity






16. A nonliving part of an organism's habitat






17. Provide wood






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






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






20. This draws people from urban areas to rural areas






21. Manage - protect and reintroduce threatened and endangered species






22. Pollution from a factory near your school






23. A species that is at risk of extinction






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






25. The largest population that an area can support






26. Help improve the standard of living for residents






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






28. An example of a method for managing whole ecosystems and habitats






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






30. A form of decision-making concerned with the allocation and conservation of natural resources






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






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






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






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






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






36. Burning fossil fuels






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






38. The role of an organism in its habitat - or how it makes its living






39. The loss of a natural habitat






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






41. Taking in carbon dioxide from the atmosphere during photosynthesis






42. Leaving a population






43. Anything in the environment that is used by people is called a natural resource






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






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






46. Rising sea level






47. Resulted in suppression of all forest fires

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48. Causes a cooling effect

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49. A consumer that eats only plants






50. Are carefully controlled