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 number of different species in an area






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






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






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






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






6. Making direct measurements






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






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






9. The pattern of overlapping food chains in an ecosystem






10. Help improve the standard of living for residents






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






12. 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






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






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






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






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






17. Amount of land each person uses






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






19. A species that is at risk of extinction






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






21. Fires that are set by humans






22. The loss of a natural habitat






23. Moving into a population






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






25. Causes a cooling effect

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






27. The mating of animals in zoos or wildlife preserves






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






29. Contamination of land - water - or air






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






31. Illegal killing or removal of wildlife from their habitats






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






33. Anything in the environment that is used by people is called a natural resource






34. Deals with biological hazards






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






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






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






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






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






40. One way zoos and aquariums help increase wildlife populations






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






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






43. The study of the natural processes that occur in the environment and how humans can affect them






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






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






46. Leaving a population






47. Rising sea level






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






49. A consumer that eats only plants






50. Organism that carries pathogens