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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 influences the survival of many others in an ecosystem






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






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






4. Are carefully controlled






5. The number of different species in an area






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






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






8. Habitat change and fragmentation






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






10. Any substance that poses a chemical hazard






11. The pattern of overlapping food chains in an ecosystem






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






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






14. Can result in a decrease of property damage






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






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






17. A consumer that eats only animals






18. Leaving a population






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






20. Burning fossil fuels






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






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






23. Causes a cooling effect

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24. Resulted in suppression of all forest fires

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25. A nonliving part of an organism's habitat






26. An example of a method for managing whole ecosystems and habitats






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






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






29. 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






30. Manage - protect and reintroduce threatened and endangered species






31. Shift of population from countryside to cities






32. Watering crops

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33. A living part of an organism's habitat






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






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






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






37. A consumer that eats only plants






38. Provide wood






39. Has the highest amount of species diversity






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






41. A species that is at risk of extinction






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






43. Taking in carbon dioxide from the atmosphere during photosynthesis






44. Bumps on the roots of certain plants






45. The largest population that an area can support






46. Using public transportation






47. The highest level of biodiversity






48. Sex - weight - and health issues






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






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