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






2. The number of different species in an area






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






4. Sikhote-Alin mountains and the Siberian tigers living there are separated from other mountains by this






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. A relationship between two species in which both species benefit






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






8. Chemicals that cause cancer






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






10. A consumer that eats both plants and animals






11. Sex - weight - and health issues






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






13. Burning fossil fuels






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






15. Illegal killing or removal of wildlife from their habitats






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






17. Causes a cooling effect

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






19. This draws people from urban areas to rural areas






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






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






22. A species that is at risk of extinction






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






24. An organism that can make its own food






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






26. Contamination of land - water - or air






27. Deals with biological hazards






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






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






30. 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






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






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






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






34. Bumps on the roots of certain plants






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






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






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






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






39. Organism that carries pathogens






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






41. A living part of an organism's habitat






42. Watering crops

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






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






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






46. Any substance that poses a chemical hazard






47. Rising sea level






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






49. The pattern of overlapping food chains in an ecosystem






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