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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 consumer that eats only plants






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






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






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






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






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






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






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






9. A relationship between two species in which both species benefit






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






11. By increasing the need for people to drive






12. Organism that carries pathogens






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






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






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






16. A virus or bacterium (organisms) that cause infectious diseases






17. The mating of animals in zoos or wildlife preserves






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






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






20. Chemicals that cause cancer






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






22. The loss of a natural habitat






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






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






25. The form of transportation that uses the most energy per passenger mile






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






27. A nonliving part of an organism's habitat






28. Taking in carbon dioxide from the atmosphere during photosynthesis






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






30. Deals with biological hazards






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






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






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






34. Bumps on the roots of certain plants






35. Watering crops

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






37. A living part of an organism's habitat






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






39. A species that is at risk of extinction






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






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






42. Provide wood






43. Has the highest amount of species diversity






44. Resulted in suppression of all forest fires

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45. Increase the stability of an ecosystem






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






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






48. The practice of protecting the environment






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






50. The number of different species in an area







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Can you answer 50 questions in 15 minutes?


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