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






2. Sex - weight - and health issues






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






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






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






6. The pattern of overlapping food chains in an ecosystem






7. Contamination of land - water - or air






8. An organism that can make its own food






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






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






11. Illegal killing or removal of wildlife from their habitats






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






13. Deals with biological hazards






14. The study of the natural processes that occur in the environment and how humans can affect them






15. Resulted in suppression of all forest fires

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16. Can result in a decrease of property damage






17. Chemicals that cause cancer






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






19. The loss of a natural habitat






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






21. Leaving a population






22. The practice of protecting the environment






23. Building up not out






24. Any substance that poses a chemical hazard






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






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






27. By increasing the need for people to drive






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






29. Organism that carries pathogens






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






31. Are carefully controlled






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






33. Using public transportation






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






35. A consumer that eats both plants and animals






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






37. This draws people from urban areas to rural areas






38. Burning fossil fuels






39. Fires that are set by humans






40. Moving into a population






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






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






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






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






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






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






47. An organism that breaks down wastes and dead organisms






48. Amount of land each person uses






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






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