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. 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






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






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






4. Taking in carbon dioxide from the atmosphere during photosynthesis






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






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






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






8. Provide wood






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






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






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






12. Resulted in suppression of all forest fires

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13. Pollution from a factory near your school






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






15. The largest population that an area can support






16. Contamination of land - water - or air






17. A species that is at risk of extinction






18. Watering crops

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






20. Burning fossil fuels






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






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






23. A consumer that eats both plants and animals






24. Can result in a decrease of property damage






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






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






27. A consumer that eats only animals






28. Leaving a population






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






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






31. The practice of protecting the environment






32. A carnivore that feeds on the bodies of dead organisms






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






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






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






36. Fires that are set by humans






37. The highest level of biodiversity






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






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






40. Has the highest amount of species diversity






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






42. The mating of animals in zoos or wildlife preserves






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






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






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






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






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






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






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






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