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






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






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






4. Making direct measurements






5. The highest level of biodiversity






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






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






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






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






10. Chemicals that causes harm to embryos and fetuses






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






12. The loss of a natural habitat






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






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






15. Leaving a population






16. Amount of land each person uses






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






18. Provide wood






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






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






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






22. The mating of animals in zoos or wildlife preserves






23. Taking in carbon dioxide from the atmosphere during photosynthesis






24. Increase the stability of an ecosystem






25. Organism that carries pathogens






26. One way zoos and aquariums help increase wildlife populations






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






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






29. Shift of population from countryside to cities






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






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






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






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






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






35. A nonliving part of an organism's habitat






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






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






38. Deals with biological hazards






39. An organism that can make its own food






40. Sex - weight - and health issues






41. A species that is at risk of extinction






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






43. Using public transportation






44. Chemicals that cause cancer






45. Watering crops

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






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






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






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