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. Provide wood






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






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






4. 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






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






6. Leaving a population






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






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






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






10. Using public transportation






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






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






13. Chemicals that causes harm to embryos and fetuses






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






15. Viruses - bacteria and other organisms in the environment that harm human health






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






17. Building up not out






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






19. Watering crops

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20. The largest population that an area can support






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






22. The pattern of overlapping food chains in an ecosystem






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






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






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






26. Increase the stability of an ecosystem






27. An organism that can make its own food






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






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






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






31. Rising sea level






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






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






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






35. A relationship in which one organism lives on or in a host and harms it






36. Chemicals that cause cancer






37. Illegal killing or removal of wildlife from their habitats






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






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






40. Can result in a decrease of property damage






41. Pollution from a factory near your school






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






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






44. A living part of an organism's habitat






45. A consumer that eats only plants






46. A consumer that eats both plants and animals






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






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






49. The loss of a natural habitat






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