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






2. Bumps on the roots of certain plants






3. Fires that are set by humans






4. The pattern of overlapping food chains in an ecosystem






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






6. Resulted in suppression of all forest fires


7. An organism that breaks down wastes and dead organisms






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






9. Cooking oil - fuel - and medicines






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






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






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






13. Moving into a population






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






15. The series of changes that occur in an area where no soil or organisms exist






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






17. Any substance that poses a chemical hazard






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






19. A large area heavily populated like Miami - Florida or Toledo - Ohio






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






21. The largest population that an area can support






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






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






24. Organism that carries pathogens






25. An organism that can make its own food






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






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






28. Increase the stability of an ecosystem






29. A consumer that eats both plants and animals






30. This draws people from urban areas to rural areas






31. Sex - weight - and health issues






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






33. Help improve the standard of living for residents






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






35. The process of cutting down all the trees in an area at once






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






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






38. A consumer that eats only animals






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






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






41. An environment that provides the things an organism needs to live - grow - and reproduce






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






43. Provide wood






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






45. A species that is at risk of extinction






46. Has the highest amount of species diversity






47. The probability that a hazard will cause a harmful response






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






49. The loss of a natural habitat






50. By increasing the need for people to drive