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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. Habitat change and fragmentation






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






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






4. The study of how living things interact with each other and their environment






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






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






7. Making direct measurements






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






9. Watering crops

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






11. The loss of a natural habitat






12. Building up not out






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






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






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






16. A close relationship between two species that benefits at least one of the species






17. A species that is at risk of extinction






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






19. A consumer that eats only plants






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






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






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






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






24. An organism that breaks down wastes and dead organisms






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






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






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






28. The highest level of biodiversity






29. The mating of animals in zoos or wildlife preserves






30. The largest population that an area can support






31. Fires that are set by humans






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






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






34. 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






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






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






37. Manage - protect and reintroduce threatened and endangered species






38. The practice of protecting the environment






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






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






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






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






43. Any substance that poses a chemical hazard






44. Has the highest amount of species diversity






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






46. Moving into a population






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






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






49. Burning fossil fuels






50. An organism that can make its own food







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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