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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. Bumps on the roots of certain plants






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






3. Manage - protect and reintroduce threatened and endangered species






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






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






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






7. Energy from the sun would be reflected back into space






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






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






10. The largest population that an area can support






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






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






13. Resulted in suppression of all forest fires

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14. Moving into a population






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






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






17. Can result in a decrease of property damage






18. Building up not out






19. Leaving a population






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






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






22. Illegal killing or removal of wildlife from their habitats






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






24. Shift of population from countryside to cities






25. Help improve the standard of living for residents






26. An organism that breaks down wastes and dead organisms






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






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






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






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






31. The mating of animals in zoos or wildlife preserves






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






33. A nonliving part of an organism's habitat






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






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






36. A consumer that eats only animals






37. Are carefully controlled






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






39. Increase the stability of an ecosystem






40. A consumer that eats only plants






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






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






43. Taking in carbon dioxide from the atmosphere during photosynthesis






44. A consumer that eats both plants and animals






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






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






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






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






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






50. Causes a cooling effect

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