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. Making direct measurements






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






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






4. An organism that is killed and eaten by another organism






5. A living part of an organism's habitat






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






7. Sex - weight - and health issues






8. 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






9. A consumer that eats only plants






10. Provide wood






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






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






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






14. Any substance that poses a chemical hazard






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






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






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






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






19. Building up not out






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






21. This draws people from urban areas to rural areas






22. Organism that carries pathogens






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






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






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






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






27. Help improve the standard of living for residents






28. By increasing the need for people to drive






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






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






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






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






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






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






35. Fires that are set by humans






36. Resulted in suppression of all forest fires

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37. Habitat change and fragmentation






38. The highest level of biodiversity






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






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






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






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






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






44. An area with a large population of valuable ocean organisms






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






46. Can result in a decrease of property damage






47. A consumer that eats only animals






48. An organism that can make its own food






49. One way zoos and aquariums help increase wildlife populations






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