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






2. Has the highest amount of species diversity






3. A consumer that eats only plants






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






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






6. Trees - grass - crops - wetlands - water - building and pavements






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






8. Habitat change and fragmentation






9. An organism that breaks down wastes and dead organisms






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






11. Shift of population from countryside to cities






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






13. An organism that can make its own food






14. Energy from the sun would be reflected back into space






15. 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






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






17. A species that is at risk of extinction






18. The loss of a natural habitat






19. Using public transportation






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






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






22. Deals with biological hazards






23. Chemicals that causes harm to embryos and fetuses






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






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






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






27. This draws people from urban areas to rural areas






28. Causes a cooling effect

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






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






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






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






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






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






35. Manage - protect and reintroduce threatened and endangered species






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






37. A consumer that eats only animals






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






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






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






41. Moving into a population






42. The pattern of overlapping food chains in an ecosystem






43. Can result in a decrease of property damage






44. A living part of an organism's habitat






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






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






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






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






49. A species that could become endangered in the near future






50. Help improve the standard of living for residents