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 disappearance of all members of a species from Earth






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






3. Help improve the standard of living for residents






4. Shift of population from countryside to cities






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






6. The loss of a natural habitat






7. A consumer that eats only animals






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






9. The pattern of overlapping food chains in an ecosystem






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






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






12. Making direct measurements






13. The practice of protecting the environment






14. A species that is at risk of extinction






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






16. Moving into a population






17. A nonliving part of an organism's habitat






18. Watering crops


19. Viruses - bacteria and other organisms in the environment that harm human health






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






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






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






23. All the members of one species in a particular area






24. By increasing the need for people to drive






25. Taking in carbon dioxide from the atmosphere during photosynthesis






26. Amount of land each person uses






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






28. Building up not out






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






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






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






32. Process of measuring the chance that an environmental hazard will cause harm






33. Habitat change and fragmentation






34. Illegal killing or removal of wildlife from their habitats






35. Contamination of land - water - or air






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






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






38. Rising sea level






39. The process of changing free nitrogen gas into a usable form






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






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






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






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






44. A form of decision-making concerned with the allocation and conservation of natural resources






45. The disappearance of a particular population from a given area - but not from the entire species globally






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






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






48. The number of different species in an area






49. Provide wood






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