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. By increasing the need for people to drive






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






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






4. The highest level of biodiversity






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






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






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






8. Organism that carries pathogens






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






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






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






12. Building up not out






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






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






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






16. Chemicals that causes harm to embryos and fetuses






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






18. A nonliving part of an organism's habitat






19. Provide wood






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






21. Help improve the standard of living for residents






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






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






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






25. Cooking oil - fuel - and medicines






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






27. Pollution from a factory near your school






28. Amount of land each person uses






29. Habitat change and fragmentation






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






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






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






33. Have a greater sensitivity to environmental hazards than any other group






34. Shift of population from countryside to cities






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






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






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






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






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






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






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






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






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






44. A species that is at risk of extinction






45. Contamination of land - water - or air






46. A living part of an organism's habitat






47. The largest population that an area can support






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






49. Making direct measurements






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