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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. Shift of population from countryside to cities






2. An example of a method for managing whole ecosystems and habitats






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






4. The largest population that an area can support






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






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






7. Increase the stability of an ecosystem






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






9. Chemicals that cause cancer






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






11. Making direct measurements






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






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






14. Contamination of land - water - or air






15. The highest level of biodiversity






16. 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






17. Refers to an increase in Earth's average surface temperature






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






19. Fires that are set by humans






20. Bumps on the roots of certain plants






21. A consumer that eats both plants and animals






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






23. An organism that can make its own food






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






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






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






27. The pattern of overlapping food chains in an ecosystem






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






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






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






31. Causes a cooling effect

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32. Taking in carbon dioxide from the atmosphere during photosynthesis






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






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






35. Cooking oil - fuel - and medicines






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






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






38. Has the highest amount of species diversity






39. Deals with biological hazards






40. Any substance that poses a chemical hazard






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






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






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






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






45. Organism that carries pathogens






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






47. The disappearance of a particular population from a given area - but not from the entire species globally






48. Moving into a population






49. Manage - protect and reintroduce threatened and endangered species






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