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






2. Bumps on the roots of certain plants






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






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






5. A living part of an organism's habitat






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






7. A consumer that eats both plants and animals






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






9. An organism that breaks down wastes and dead organisms






10. A consumer that eats only animals






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






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






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






14. Fires that are set by humans






15. A behavior or physical characteristic that allows an organism to live successfully in its environment






16. Chemicals that causes harm to embryos and fetuses






17. Are carefully controlled






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






19. The loss of a natural habitat






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






21. Help improve the standard of living for residents






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






23. The number of different species in an area






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






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






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






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






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






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






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






31. Increase the stability of an ecosystem






32. The highest level of biodiversity






33. Cooking oil - fuel - and medicines






34. The mating of animals in zoos or wildlife preserves






35. Amount of land each person uses






36. Habitat change and fragmentation






37. A nonliving part of an organism's habitat






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






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






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






41. Making direct measurements






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






43. Manage - protect and reintroduce threatened and endangered species






44. One way zoos and aquariums help increase wildlife populations






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






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






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






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






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






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