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. An area with a large population of valuable ocean organisms






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






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






4. Increase the stability of an ecosystem






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






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






7. An organism that breaks down wastes and dead organisms






8. A consumer that eats only plants






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






10. A species that influences the survival of many others in an ecosystem






11. A nonliving part of an organism's habitat






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






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






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






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






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






17. A resource that is either always available or is naturally replaced in a relatively short time






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






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






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






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






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






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






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






25. Cooking oil - fuel - and medicines






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






27. Are carefully controlled






28. Leaving a population






29. The mating of animals in zoos or wildlife preserves






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






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






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






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






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






35. Making direct measurements






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






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






38. Chemicals that cause cancer






39. An organism that can make its own food






40. Has the highest amount of species diversity






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






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






43. Moving into a population






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






45. Bumps on the roots of certain plants






46. Taking in carbon dioxide from the atmosphere during photosynthesis






47. The pattern of overlapping food chains in an ecosystem






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






49. Burning fossil fuels






50. Rising sea level