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






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






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






4. A living part of an organism's habitat






5. Increase the stability of an ecosystem






6. Burning fossil fuels






7. Leaving a population






8. A species that is at risk of extinction






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






10. Deals with biological hazards






11. Habitat change and fragmentation






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






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






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






15. Building up not out






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






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






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






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






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






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






22. Illegal killing or removal of wildlife from their habitats






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






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






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






26. Amount of land each person uses






27. Chemicals that cause cancer






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






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






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






31. Trees - grass - crops - wetlands - water - building and pavements






32. Resulted in suppression of all forest fires

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






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






35. Causes a cooling effect

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36. The breaking of a habitat into smaller - isolated pieces






37. An organism that breaks down wastes and dead organisms






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






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






40. 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






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






42. Relieving a nation from repaying some of the money it owes other nations in exchange for protecting its biodiversity






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






44. Pollution from a factory near your school






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






46. Cooking oil - fuel - and medicines






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






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






49. The disappearance of all members of a species from Earth






50. The pattern of overlapping food chains in an ecosystem