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






2. One way zoos and aquariums help increase wildlife populations






3. Sex - weight - and health issues






4. A consumer that eats both plants and animals






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






6. Bumps on the roots of certain plants






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






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






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






10. Are carefully controlled






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






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






13. This draws people from urban areas to rural areas






14. Deals with biological hazards






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






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






17. An environment that provides the things an organism needs to live - grow - and reproduce






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






19. An organism that can make its own food






20. Businesses are arranged in a long row along a roadway - with no main community






21. Habitat change and fragmentation






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






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






24. Has the highest amount of species diversity






25. By increasing the need for people to drive






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






27. An organism that breaks down wastes and dead organisms






28. Taking in carbon dioxide from the atmosphere during photosynthesis






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






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






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






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






33. Fires that are set by humans






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






35. Building up not out






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






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






38. Chemicals that causes harm to embryos and fetuses






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






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






41. The practice of protecting the environment






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






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






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






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






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






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






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






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






50. Any substance that poses a chemical hazard