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 organism that breaks down wastes and dead organisms






2. Help improve the standard of living for residents






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






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






5. Chemicals that cause cancer






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






7. An organism that can make its own food






8. By increasing the need for people to drive






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






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






11. The largest population that an area can support






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






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






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






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






16. Increase the stability of an ecosystem






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






18. Contamination of land - water - or air






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






20. The struggle between organisms to survive as they attempt to use the same limited resource






21. Are carefully controlled






22. Deals with biological hazards






23. The number of different species in an area






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






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






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






27. The loss of a natural habitat






28. A consumer that eats both plants and animals






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






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






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






32. Making direct measurements






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






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






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






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






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






38. Causes a cooling effect


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






40. Burning fossil fuels






41. Bumps on the roots of certain plants






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






43. A consumer that eats only animals






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






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






46. Loud noises in the air like jack hammers - loud car stereos - etc...






47. A series of events in which one organism eats another and obtains energy






48. Building up not out






49. Manage - protect and reintroduce threatened and endangered species






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