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






2. Leaving a population






3. Increase the stability of an ecosystem






4. The probability that a hazard will cause a harmful response






5. Building up not out






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






7. Bumps on the roots of certain plants






8. The mating of animals in zoos or wildlife preserves






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






10. Burning fossil fuels






11. The number of different species in an area






12. A form of decision-making concerned with the allocation and conservation of natural resources






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






14. Chemicals that cause cancer






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






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






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






18. Fires that are set by humans






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






20. A consumer that eats only animals






21. The practice of protecting the environment






22. The pattern of overlapping food chains in an ecosystem






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






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






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






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






27. This draws people from urban areas to rural areas






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






29. The process of cutting down only some trees in an area






30. A species that is at risk of extinction






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






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






33. Causes a cooling effect


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






35. A consumer that eats only plants






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






37. Deals with biological hazards






38. Making direct measurements






39. Provide wood






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






41. Organism that carries pathogens






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






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






44. The loss of a natural habitat






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






46. Illegal killing or removal of wildlife from their habitats






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






48. 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






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






50. Chemicals that causes harm to embryos and fetuses