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 species that is at risk of extinction






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






3. A group of land ecosystems with similar climates and organisms






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






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






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






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






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






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






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






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






12. A living part of an organism's habitat






13. A consumer that eats both plants and animals






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






15. Chemicals that causes harm to embryos and fetuses






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






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






18. An organism that is killed and eaten by another organism






19. The largest population that an area can support






20. The mating of animals in zoos or wildlife preserves






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






22. Moving into a population






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






24. Deals with biological hazards






25. Pollution from a factory near your school






26. Manage - protect and reintroduce threatened and endangered species






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






28. Burning fossil fuels






29. Amount of land each person uses






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






31. Any substance that poses a chemical hazard






32. An organism that breaks down wastes and dead organisms






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






34. An organism that can make its own food






35. 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






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






37. Using public transportation






38. Resulted in suppression of all forest fires


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






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






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






42. Organism that carries pathogens






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






44. Cooking oil - fuel - and medicines






45. Bumps on the roots of certain plants






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






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






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






49. A consumer that eats only plants






50. A nonliving part of an organism's habitat