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. Organism that carries pathogens






2. The pattern of overlapping food chains in an ecosystem






3. Provide wood






4. The largest population that an area can support






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






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






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






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






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






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






11. Manage - protect and reintroduce threatened and endangered species






12. Pollution from a factory near your school






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






14. Chemicals that cause cancer






15. Land that is sparsely populated and has few buildings or roads






16. Increase the stability of an ecosystem






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






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






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






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






21. Moving into a population






22. A close relationship between two species that benefits at least one of the species






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






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






25. Contamination of land - water - or air






26. A living part of an organism's habitat






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






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






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






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






31. Leaving a population






32. A consumer that eats both plants and animals






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






34. The number of different species in an area






35. A species that is at risk of extinction






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






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






38. Sex - weight - and health issues






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






40. 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






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






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






43. The highest level of biodiversity






44. Amount of land each person uses






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






46. Building up not out






47. One way zoos and aquariums help increase wildlife populations






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






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






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