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. The disappearance of all members of a species from Earth






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






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






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






5. Any substance that poses a chemical hazard






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






7. By increasing the need for people to drive






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






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






10. Rising sea level






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






12. Contamination of land - water - or air






13. Can result in a decrease of property damage






14. Using public transportation






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






16. Organism that carries pathogens






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






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






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






20. Chemicals that cause cancer






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






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






23. Shift of population from countryside to cities






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






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






26. Help improve the standard of living for residents






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






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






29. Fires that are set by humans






30. Manage - protect and reintroduce threatened and endangered species






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






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






33. Taking in carbon dioxide from the atmosphere during photosynthesis






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






35. The loss of a natural habitat






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






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






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






39. A carnivore that feeds on the bodies of dead organisms






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






41. Sex - weight - and health issues






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






43. Moving into a population






44. Chemicals that causes harm to embryos and fetuses






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






46. Leaving a population






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






48. The practice of protecting the environment






49. Cooking oil - fuel - and medicines






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