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. Building up not out






2. Amount of land each person uses






3. Chemicals that cause cancer






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






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






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






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






8. 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






9. Any substance that poses a chemical hazard






10. Viruses - bacteria and other organisms in the environment that harm human health






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






12. Causes a cooling effect

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






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






15. Using public transportation






16. Taking in carbon dioxide from the atmosphere during photosynthesis






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






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






19. A consumer that eats both plants and animals






20. Energy from the sun would be reflected back into space






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






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






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






24. Resulted in suppression of all forest fires

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






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






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






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






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






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






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






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






33. The number of different species in an area






34. Organism that carries pathogens






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






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






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






38. The pattern of overlapping food chains in an ecosystem






39. By increasing the need for people to drive






40. An organism that can make its own food






41. Leaving a population






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






43. Provide wood






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






45. Manage - protect and reintroduce threatened and endangered species






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






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






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






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






50. Cooking oil - fuel - and medicines