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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 is at risk of extinction






2. The mating of animals in zoos or wildlife preserves






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






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






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






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






7. Increase the stability of an ecosystem






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






9. Can result in a decrease of property damage






10. Leaving a population






11. Species that are carried to a new location by people






12. A species that influences the survival of many others in an ecosystem






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






14. Bumps on the roots of certain plants






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






16. Sex - weight - and health issues






17. The number of different species in an area






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






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






20. Organism that carries pathogens






21. Deals with biological hazards






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






23. Cooking oil - fuel - and medicines






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






25. Making direct measurements






26. Burning fossil fuels






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






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






29. By increasing the need for people to drive






30. The disappearance of all members of a species from Earth






31. Illegal killing or removal of wildlife from their habitats






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






33. Resulted in suppression of all forest fires

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






35. Process of measuring the chance that an environmental hazard will cause harm






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






37. A consumer that eats only animals






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






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






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






41. Contamination of land - water - or air






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






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






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






45. Taking in carbon dioxide from the atmosphere during photosynthesis






46. Shift of population from countryside to cities






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






48. The loss of a natural habitat






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






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