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






2. A consumer that eats both plants and animals






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






4. An organism that breaks down wastes and dead organisms






5. Causes a cooling effect


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






7. A nonliving part of an organism's habitat






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






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






10. The amount of carbon dioxide emissions for which an individual or group is responsible






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






12. The practice of protecting the environment






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






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






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






16. Chemicals that causes harm to embryos and fetuses






17. Shift of population from countryside to cities






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






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






20. The largest population that an area can support






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






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






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






24. Cooking oil - fuel - and medicines






25. Any substance that poses a chemical hazard






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






27. Has the highest amount of species diversity






28. Fires that are set by humans






29. A consumer that eats only plants






30. Deals with biological hazards






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






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






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






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






35. A living part of an organism's habitat






36. Moving into a population






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






38. Bumps on the roots of certain plants






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






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






41. The loss of a natural habitat






42. Are carefully controlled






43. A consumer that eats only animals






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






45. Organism that carries pathogens






46. An organism that can make its own food






47. Habitat change and fragmentation






48. A disease that has appeared in the human population for the first time or that has existed for a while but is increasing rapidly and spreading around the world






49. The mating of animals in zoos or wildlife preserves






50. Contamination of land - water - or air