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






2. Any substance that poses a chemical hazard






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






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






5. Has the highest amount of species diversity






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






7. A consumer that eats only plants






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






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






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






11. Soil - fresh water - wild animals - and timber






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






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






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






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






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






17. Provide wood






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






19. Habitat change and fragmentation






20. Are carefully controlled






21. Causes a cooling effect

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22. Chemicals that causes harm to embryos and fetuses






23. Pollution from a factory near your school






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






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






26. Resulted in suppression of all forest fires

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






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






29. Rising sea level






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






31. An organism that can make its own food






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






33. Organism that carries pathogens






34. Increase the stability of an ecosystem






35. Amount of land each person uses






36. 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






37. Contamination of land - water - or air






38. Cooking oil - fuel - and medicines






39. Burning fossil fuels






40. A nonliving part of an organism's habitat






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






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






43. Sex - weight - and health issues






44. Taking in carbon dioxide from the atmosphere during photosynthesis






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






46. Illegal killing or removal of wildlife from their habitats






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






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






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






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