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






2. Organism that carries pathogens






3. A consumer that eats only plants






4. A consumer that eats both plants and animals






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






6. The loss of a natural habitat






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






8. Building up not out






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






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






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






12. Rising sea level






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






14. Leaving a population






15. Can result in a decrease of property damage






16. Species that are carried to a new location by people






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






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






19. Bumps on the roots of certain plants






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






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






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






23. Increase the stability of an ecosystem






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






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






26. An organism that can make its own food






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






28. Moving into a population






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






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






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






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






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






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






35. A living part of an organism's habitat






36. Using public transportation






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






38. Habitat change and fragmentation






39. The highest level of biodiversity






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






41. Manage - protect and reintroduce threatened and endangered species






42. Help improve the standard of living for residents






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






44. Resulted in suppression of all forest fires

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






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






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






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






49. An organism that breaks down wastes and dead organisms






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