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. Shift of population from countryside to cities






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






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






4. Leaving a population






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






6. A nonliving part of an organism's habitat






7. A relationship between two species in which both species benefit






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






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






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






11. By increasing the need for people to drive






12. 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






13. Making direct measurements






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






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






16. The reason why tigers living in warmer climates have thinner fur than tigers living in cool climates






17. Help improve the standard of living for residents






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






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






20. Taking in carbon dioxide from the atmosphere during photosynthesis






21. Burning fossil fuels






22. Pollution from a factory near your school






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






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






25. All the members of one species in a particular area






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






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






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






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






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






31. Organism that carries pathogens






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






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






34. The practice of protecting the environment






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






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






37. Land that is sparsely populated and has few buildings or roads






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






39. A consumer that eats only plants






40. A consumer that eats only animals






41. Moving into a population






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






43. Increase the stability of an ecosystem






44. Deals with biological hazards






45. A species that is at risk of extinction






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






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






48. Watering crops

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49. Using public transportation






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