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






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






3. Leaving a population






4. The highest level of biodiversity






5. The number of different species in an area






6. Organism that carries pathogens






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






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






9. An organism that breaks down wastes and dead organisms






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






11. The mating of animals in zoos or wildlife preserves






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






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






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






15. The most direct way in which biodiverstiy can provide a source of income






16. A series of events in which one organism eats another and obtains energy






17. One way zoos and aquariums help increase wildlife populations






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






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






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






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






22. A consumer that eats only plants






23. The practice of protecting the environment






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






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






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






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






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






29. Making direct measurements






30. Amount of land each person uses






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






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






33. The loss of a natural habitat






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






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






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






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






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






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






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






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






42. Moving into a population






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






44. Sex - weight - and health issues






45. A relationship between two species in which both species benefit






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






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






48. Habitat change and fragmentation






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






50. Can result in a decrease of property damage