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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. The loss of a natural habitat






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






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






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






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






6. Causes a cooling effect

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7. The pattern of overlapping food chains in an ecosystem






8. Chemicals that causes harm to embryos and fetuses






9. All the members of one species in a particular area






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






11. Cooking oil - fuel - and medicines






12. One way zoos and aquariums help increase wildlife populations






13. Any substance that poses a chemical hazard






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






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






16. A consumer that eats only plants






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






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






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






20. Fires that are set by humans






21. An organism that breaks down wastes and dead organisms






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






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






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






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






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






27. Increase the stability of an ecosystem






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






29. Bumps on the roots of certain plants






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






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






32. By increasing the need for people to drive






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






34. Building up not out






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






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






37. Watering crops

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






39. Habitat change and fragmentation






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






41. Shift of population from countryside to cities






42. A nonliving part of an organism's habitat






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






44. Using public transportation






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






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






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






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






49. This draws people from urban areas to rural areas






50. The highest level of biodiversity