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






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






3. Chemicals that causes harm to embryos and fetuses






4. Using public transportation






5. The study of the natural processes that occur in the environment and how humans can affect them






6. Making direct measurements






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






8. One way zoos and aquariums help increase wildlife populations






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






10. This draws people from urban areas to rural areas






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






12. Bumps on the roots of certain plants






13. An organism that breaks down wastes and dead organisms






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






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






16. Any substance that poses a chemical hazard






17. Rising sea level






18. Energy from the sun would be reflected back into space






19. Habitat change and fragmentation






20. Shift of population from countryside to cities






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






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






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






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






25. Illegal killing or removal of wildlife from their habitats






26. Causes a cooling effect

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






28. 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






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






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






31. Organism that carries pathogens






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






33. A relationship between two species in which one species benefits and the other is neither helped nor harmed






34. A consumer that eats only animals






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






36. Amount of land each person uses






37. Deals with biological hazards






38. Leaving a population






39. The pattern of overlapping food chains in an ecosystem






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






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






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






43. Cooking oil - fuel - and medicines






44. Fires that are set by humans






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






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






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






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






49. By increasing the need for people to drive






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