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. Contamination of land - water - or air






2. Causes a cooling effect

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






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






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






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






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






8. The highest level of biodiversity






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






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






11. Building up not out






12. Sex - weight - and health issues






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






14. Habitat change and fragmentation






15. Rising sea level






16. Making direct measurements






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






18. The practice of protecting the environment






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






20. Resulted in suppression of all forest fires

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21. Any substance that poses a chemical hazard






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






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






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






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






26. Taking in carbon dioxide from the atmosphere during photosynthesis






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






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






29. Moving into a population






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






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






32. Provide wood






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






34. A nonliving part of an organism's habitat






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






36. Watering crops

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37. The pattern of overlapping food chains in an ecosystem






38. A resource that is either always available or is naturally replaced in a relatively short time






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






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






41. Help improve the standard of living for residents






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






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






44. Chemicals that causes harm to embryos and fetuses






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






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






47. Burning fossil fuels






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






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






50. The number of different species in an area