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. Chemicals that cause cancer






2. An organism that breaks down wastes and dead organisms






3. Chemicals that causes harm to embryos and fetuses






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






5. Contamination of land - water - or air






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






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






8. One way zoos and aquariums help increase wildlife populations






9. Leaving a population






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






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






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






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






14. Making direct measurements






15. An organism that can make its own food






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






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






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






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






20. This draws people from urban areas to rural areas






21. A species that is at risk of extinction






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






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






24. The practice of protecting the environment






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






26. Illegal killing or removal of wildlife from their habitats






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






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






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






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






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






32. A species that could become endangered in the near future






33. A living part of an organism's habitat






34. Using public transportation






35. The largest population that an area can support






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






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






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






39. Fires that are set by humans






40. A consumer that eats both plants and animals






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






42. A consumer that eats only animals






43. Burning fossil fuels






44. Organism that carries pathogens






45. The number of different species in an area






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






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






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






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






50. Increase the stability of an ecosystem