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






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






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






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






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






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






7. The pattern of overlapping food chains in an ecosystem






8. Are carefully controlled






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






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






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






12. Leaving a population






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






14. Building up not out






15. Any substance that poses a chemical hazard






16. An organism that breaks down wastes and dead organisms






17. One way zoos and aquariums help increase wildlife populations






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






19. An organism that can make its own food






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






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






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






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






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






25. A consumer that eats both plants and animals






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






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






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






29. Chemicals that causes harm to embryos and fetuses






30. The number of different species in an area






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






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






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






34. The mating of animals in zoos or wildlife preserves






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






36. By increasing the need for people to drive






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






38. A nonliving part of an organism's habitat






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






40. Cooking oil - fuel - and medicines






41. This draws people from urban areas to rural areas






42. Habitat change and fragmentation






43. Provide wood






44. Relieving a nation from repaying some of the money it owes other nations in exchange for protecting its biodiversity






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






46. Taking in carbon dioxide from the atmosphere during photosynthesis






47. The loss of a natural habitat






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






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






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