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






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






3. Shift of population from countryside to cities






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






5. Organism that carries pathogens






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






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






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






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






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






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






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






13. An organism that breaks down wastes and dead organisms






14. Chemicals that cause cancer






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






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






17. Cooking oil - fuel - and medicines






18. Are carefully controlled






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






20. Contamination of land - water - or air






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






22. The pattern of overlapping food chains in an ecosystem






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






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






25. The largest population that an area can support






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






27. Has the highest amount of species diversity






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






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






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






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






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






33. Making direct measurements






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






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






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






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






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






39. Amount of land each person uses






40. The organism that does the killing in a predation interaction






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






42. A consumer that eats both plants and animals






43. Habitat change and fragmentation






44. Deals with biological hazards






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






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






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






48. An organism that can make its own food






49. Anything in the environment that is used by people is called a natural resource






50. Sex - weight - and health issues