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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. A nonliving part of an organism's habitat






2. A species that is at risk of extinction






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






4. Bumps on the roots of certain plants






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






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






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






8. The largest population that an area can support






9. Deals with biological hazards






10. Chemicals that causes harm to embryos and fetuses






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






12. The number of different species in an area






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






14. Resulted in suppression of all forest fires

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






16. A consumer that eats only animals






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






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






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






20. Building up not out






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






22. Sex - weight - and health issues






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






24. Habitat change and fragmentation






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






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






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






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






29. The loss of a natural habitat






30. The most direct way in which biodiverstiy can provide a source of income






31. This draws people from urban areas to rural areas






32. An organism that can make its own food






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






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






35. The pattern of overlapping food chains in an ecosystem






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






37. Burning fossil fuels






38. Cooking oil - fuel - and medicines






39. Any substance that poses a chemical hazard






40. Manage - protect and reintroduce threatened and endangered species






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






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






43. The practice of protecting the environment






44. A consumer that eats only plants






45. By increasing the need for people to drive






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






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






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






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






50. An organism that breaks down wastes and dead organisms






Can you answer 50 questions in 15 minutes?



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