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 natural pattern in which species diversity generally increases toward the equator






3. The pattern of overlapping food chains in an ecosystem






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






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






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






7. Leaving a population






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






9. Building up not out






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






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






12. Habitat change and fragmentation






13. The highest level of biodiversity






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






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






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






17. Manage - protect and reintroduce threatened and endangered species






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






19. A consumer that eats only plants






20. The largest population that an area can support






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






22. An organism that can make its own food






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






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






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






26. Illegal killing or removal of wildlife from their habitats






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






28. A living part of an organism's habitat






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






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






31. Chemicals that cause cancer






32. Deals with biological hazards






33. The mating of animals in zoos or wildlife preserves






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






35. Any substance that poses a chemical hazard






36. Amount of land each person uses






37. Cooking oil - fuel - and medicines






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






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






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






41. Pollution from a factory near your school






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






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






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






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






46. A consumer that eats only animals






47. Sex - weight - and health issues






48. Increase the stability of an ecosystem






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






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