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






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






3. An organism that can make its own food






4. The largest population that an area can support






5. This draws people from urban areas to rural areas






6. A nonliving part of an organism's habitat






7. Amount of land each person uses






8. The number of different species in an area






9. Increase the stability of an ecosystem






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






11. The practice of protecting the environment






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






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






14. Are carefully controlled






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






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






17. Can result in a decrease of property damage






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






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






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






21. Chemicals that causes harm to embryos and fetuses






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






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






24. Bumps on the roots of certain plants






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






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






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






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






29. One way zoos and aquariums help increase wildlife populations






30. Process of measuring the chance that an environmental hazard will cause harm






31. Making direct measurements






32. A consumer that eats only animals






33. The organism that does the killing in a predation interaction






34. Chemicals that cause cancer






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






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






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






38. Transportation systems - communications systems - water services - power supplies - and schools






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






40. The loss of a natural habitat






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






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






43. A consumer that eats both plants and animals






44. Pollution from a factory near your school






45. Habitat change and fragmentation






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






47. Rising sea level






48. Provide wood






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






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