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. Sex - weight - and health issues






2. Pollution from a factory near your school






3. Using public transportation






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






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






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






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






8. The pattern of overlapping food chains in an ecosystem






9. Moving into a population






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






11. Can result in a decrease of property damage






12. An organism that can make its own food






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






14. Help improve the standard of living for residents






15. A carnivore that feeds on the bodies of dead organisms






16. Burning fossil fuels






17. Causes a cooling effect


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






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






20. The number of different species in an area






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






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






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






24. Contamination of land - water - or air






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






26. An organism that breaks down wastes and dead organisms






27. Leaving a population






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






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






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






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






32. Fires that are set by humans






33. Chemical hazard that was once found in paint - young children are frequently tested for this






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






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






36. Amount of land each person uses






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






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






39. Resulted in suppression of all forest fires


40. Any substance that poses a chemical hazard






41. Organism that carries pathogens






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






43. A nonliving part of an organism's habitat






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






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






46. Chemicals that cause cancer






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






48. An area with a large population of valuable ocean organisms






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






50. One way zoos and aquariums help increase wildlife populations