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. Chemicals that causes harm to embryos and fetuses






2. Deals with biological hazards






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






4. Watering crops

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5. A nonliving part of an organism's habitat






6. Building up not out






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






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






9. Organism that carries pathogens






10. The largest population that an area can support






11. Manage - protect and reintroduce threatened and endangered species






12. The practice of protecting the environment






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






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






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






16. An organism that can make its own food






17. A consumer that eats only animals






18. Pollution from a factory near your school






19. Has the highest amount of species diversity






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






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






22. Amount of land each person uses






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






24. A species that is at risk of extinction






25. Burning fossil fuels






26. The loss of a natural habitat






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






28. 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






29. Using public transportation






30. The mating of animals in zoos or wildlife preserves






31. Increase the stability of an ecosystem






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






33. Contamination of land - water - or air






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






35. A consumer that eats only plants






36. Provide wood






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






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






39. Taking in carbon dioxide from the atmosphere during photosynthesis






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






41. The study of the natural processes that occur in the environment and how humans can affect them






42. Habitat change and fragmentation






43. Are carefully controlled






44. The highest level of biodiversity






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






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






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






48. Chemicals that cause cancer






49. The number of different species in an area






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