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 species that influences the survival of many others in an ecosystem






2. Rising sea level






3. Resulted in suppression of all forest fires

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4. Making direct measurements






5. This draws people from urban areas to rural areas






6. Provide wood






7. A nonliving part of an organism's habitat






8. The number of different species in an area






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






10. Contamination of land - water - or air






11. An organism that can make its own food






12. The mating of animals in zoos or wildlife preserves






13. An amount of a renewable resource that can be harvested regularly without reducing the future supply






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






15. Shift of population from countryside to cities






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






18. A consumer that eats only plants






19. Help improve the standard of living for residents






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






21. Cooking oil - fuel - and medicines






22. 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






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






24. Building up not out






25. One way zoos and aquariums help increase wildlife populations






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






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






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






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






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






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






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






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






34. An organism that breaks down wastes and dead organisms






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






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






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






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






39. Habitat change and fragmentation






40. Leaving a population






41. The practice of protecting the environment






42. The role of an organism in its habitat - or how it makes its living






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






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






45. Watering crops

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






47. A living part of an organism's habitat






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






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






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