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






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






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






4. The loss of a natural habitat






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






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






7. The mating of animals in zoos or wildlife preserves






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






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






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






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






12. Amount of land each person uses






13. Sex - weight - and health issues






14. Shift of population from countryside to cities






15. Fires that are set by humans






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






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






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






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






20. Burning fossil fuels






21. This draws people from urban areas to rural areas






22. Resulted in suppression of all forest fires

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23. Watering crops

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






25. Chemicals that causes harm to embryos and fetuses






26. A consumer that eats only animals






27. Taking in carbon dioxide from the atmosphere during photosynthesis






28. Rising sea level






29. Habitat change and fragmentation






30. An organism that breaks down wastes and dead organisms






31. The pattern of overlapping food chains in an ecosystem






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






33. A nonliving part of an organism's habitat






34. An organism that can make its own food






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






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






37. Making direct measurements






38. Cooking oil - fuel - and medicines






39. Contamination of land - water - or air






40. Deals with biological hazards






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






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






43. Bumps on the roots of certain plants






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






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






46. Increase the stability of an ecosystem






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






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






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






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