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






2. An organism that breaks down wastes and dead organisms






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






4. Any substance that poses a chemical hazard






5. Organism that carries pathogens






6. A living part of an organism's habitat






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






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






9. A group of organisms that are physically similar and can mate with each other and produce offspring that can also mate and reproduce






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






11. This draws people from urban areas to rural areas






12. The pattern of overlapping food chains in an ecosystem






13. Amount of land each person uses






14. Taking in carbon dioxide from the atmosphere during photosynthesis






15. Transportation systems - communications systems - water services - power supplies - and schools






16. Can result in a decrease of property damage






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






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






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






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






21. Illegal killing or removal of wildlife from their habitats






22. The largest population that an area can support






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






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






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






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






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






28. Sex - weight - and health issues






29. Has the highest amount of species diversity






30. Pollution from a factory near your school






31. By increasing the need for people to drive






32. Making direct measurements






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






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






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






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






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






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






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






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






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






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






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






44. Resulted in suppression of all forest fires

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45. Using public transportation






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






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






48. Building up not out






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






50. The series of changes that occur in an area where the ecosystem has been disturbed - but where soil and organisms still exist