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. Are carefully controlled






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






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






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






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






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






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






8. Leaving a population






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






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






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






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






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






14. Rising sea level






15. Amount of land each person uses






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






17. Cooking oil - fuel - and medicines






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






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






20. Can result in a decrease of property damage






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






22. Businesses are arranged in a long row along a roadway - with no main community






23. Organism that carries pathogens






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






25. This draws people from urban areas to rural areas






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






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






28. The process of cutting down only some trees in an area






29. Contamination of land - water - or air






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






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






32. When fish are caught faster than they can breed - causing the populatio to decrease






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






34. Resulted in suppression of all forest fires


35. A behavior or physical characteristic that allows an organism to live successfully in its environment






36. The loss of a natural habitat






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






38. The mating of animals in zoos or wildlife preserves






39. Increase the stability of an ecosystem






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






41. Chemicals that cause cancer






42. A living part of an organism's habitat






43. The probability that a hazard will cause a harmful response






44. Manage - protect and reintroduce threatened and endangered species






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






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






47. Bumps on the roots of certain plants






48. A species that is at risk of extinction






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






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