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 carnivore that feeds on the bodies of dead organisms






2. Are carefully controlled






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






4. The mating of animals in zoos or wildlife preserves






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






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






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






8. Chemicals that cause cancer






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






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






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






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






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






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






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






16. Moving into a population






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






18. An organism that breaks down wastes and dead organisms






19. The largest population that an area can support






20. Burning fossil fuels






21. Causes a cooling effect

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22. A consumer that eats both plants and animals






23. The pattern of overlapping food chains in an ecosystem






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






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






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






27. 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






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






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






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






31. Sex - weight - and health issues






32. Making direct measurements






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






34. The most effective way of preserving biodiversity by protecting whole ecosystems






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






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






37. Building up not out






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






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






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






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






42. Rising sea level






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






44. Can result in a decrease of property damage






45. Shift of population from countryside to cities






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






47. Taking in carbon dioxide from the atmosphere during photosynthesis






48. Amount of land each person uses






49. Increase the stability of an ecosystem






50. The practice of protecting the environment