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. Deals with biological hazards






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






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






4. Shift of population from countryside to cities






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






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






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






8. Building up not out






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






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






11. Organism that carries pathogens






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






13. The highest level of biodiversity






14. A consumer that eats only animals






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






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






17. By increasing the need for people to drive






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






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






20. Taking in carbon dioxide from the atmosphere during photosynthesis






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






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






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






24. Chemicals that cause cancer






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






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






27. Leaving a population






28. A nonliving part of an organism's habitat






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






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






31. Provide wood






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






33. The largest population that an area can support






34. Chemicals that causes harm to embryos and fetuses






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






36. Help improve the standard of living for residents






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






38. A consumer that eats both plants and animals






39. Habitat change and fragmentation






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






41. Pollution from a factory near your school






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






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






44. An organism that can make its own food






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






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






47. Fires that are set by humans






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






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






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