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. Contamination of land - water - or air






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






3. Manage - protect and reintroduce threatened and endangered species






4. This draws people from urban areas to rural areas






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






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






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






8. Fires that are set by humans






9. 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






10. The mating of animals in zoos or wildlife preserves






11. Any substance that poses a chemical hazard






12. Shift of population from countryside to cities






13. Increase the stability of an ecosystem






14. Rising sea level






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






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






17. Cooking oil - fuel - and medicines






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






19. Are carefully controlled






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






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






22. A consumer that eats only plants






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






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






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






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






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






28. Pollution from a factory near your school






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






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






31. Building up not out






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






33. The largest population that an area can support






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






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






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






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






38. Can result in a decrease of property damage






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






40. Chemicals that causes harm to embryos and fetuses






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






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






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






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






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






46. Using public transportation






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






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






49. Deals with biological hazards






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