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. Rising sea level






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






3. An example of a method for managing whole ecosystems and habitats






4. Loud noises in the air like jack hammers - loud car stereos - etc...






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






6. The mating of animals in zoos or wildlife preserves






7. Moving into a population






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






9. A nonliving part of an organism's habitat






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






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






12. An organism that can make its own food






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






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






15. Can result in a decrease of property damage






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






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






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






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






20. Increase the stability of an ecosystem






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






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






23. Illegal killing or removal of wildlife from their habitats






24. Cooking oil - fuel - and medicines






25. A living part of an organism's habitat






26. A species that is at risk of extinction






27. Taking in carbon dioxide from the atmosphere during photosynthesis






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






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






30. Causes a cooling effect


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






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






33. Has the highest amount of species diversity






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






35. Chemicals that causes harm to embryos and fetuses






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






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






38. 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






39. Chemicals that cause cancer






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






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






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






43. An organism that breaks down wastes and dead organisms






44. This draws people from urban areas to rural areas






45. The highest level of biodiversity






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






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






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






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






50. A consumer that eats both plants and animals