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. The disappearance of all members of a species from Earth






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






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






4. Have a greater sensitivity to environmental hazards than any other group






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






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






7. 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






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






9. Resulted in suppression of all forest fires


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






11. Manage - protect and reintroduce threatened and endangered species






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






13. An organism that can make its own food






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






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






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






17. Chemicals that cause cancer






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






19. A consumer that eats only plants






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






21. Leaving a population






22. The pattern of overlapping food chains in an ecosystem






23. Illegal killing or removal of wildlife from their habitats






24. A living part of an organism's habitat






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






26. Amount of land each person uses






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






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






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






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






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






32. A consumer that eats only animals






33. Are carefully controlled






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






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






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






37. Taking in carbon dioxide from the atmosphere during photosynthesis






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






39. Pollution from a factory near your school






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






41. Shift of population from countryside to cities






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






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






44. One way zoos and aquariums help increase wildlife populations






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






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






47. The number of different species in an area






48. An organism that breaks down wastes and dead organisms






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






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