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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. All the members of one species in a particular area






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






3. A nonliving part of an organism's habitat






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






5. Are carefully controlled






6. A living part of an organism's habitat






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






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






9. Water vapor and carbon dioxide that trap heat near the earth






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






11. The loss of a natural habitat






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






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






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






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






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






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






18. Using public transportation






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






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






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






22. Amount of land each person uses






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






24. A consumer that eats both plants and animals






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






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






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






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






29. The highest level of biodiversity






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






31. One way zoos and aquariums help increase wildlife populations






32. Causes a cooling effect

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






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






35. Moving into a population






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






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






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






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






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






41. Chemicals that causes harm to embryos and fetuses






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






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






44. Has the highest amount of species diversity






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






46. Provide wood






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






48. 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






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






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