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. Bumps on the roots of certain plants






2. Watering crops

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






4. The highest level of biodiversity






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






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






7. Building up not out






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






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






10. Has the highest amount of species diversity






11. Increase the stability of an ecosystem






12. This draws people from urban areas to rural areas






13. Rising sea level






14. A species that could become endangered in the near future






15. A living part of an organism's habitat






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






17. A species that is at risk of extinction






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






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






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






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






22. Cooking oil - fuel - and medicines






23. The largest population that an area can support






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






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






26. Deals with biological hazards






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






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






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






30. Chemicals that causes harm to embryos and fetuses






31. Fires that are set by humans






32. Leaving a population






33. An organism that breaks down wastes and dead organisms






34. Causes a cooling effect

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35. The number of different species in an area






36. Pollution from a factory near your school






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






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






39. Organism that carries pathogens






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






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






42. Resulted in suppression of all forest fires

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






44. Contamination of land - water - or air






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






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






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






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






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






50. Help improve the standard of living for residents