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. Fires that are set by humans






2. Contamination of land - water - or air






3. Making direct measurements






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






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






6. The highest level of biodiversity






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






8. Causes a cooling effect

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9. The largest population that an area can support






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






11. Rising sea level






12. Water vapor and carbon dioxide that trap heat near the earth






13. Organism that carries pathogens






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






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






16. Are carefully controlled






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






18. Increase the stability of an ecosystem






19. The role of an organism in its habitat - or how it makes its living






20. A nonliving part of an organism's habitat






21. A species that is at risk of extinction






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






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






24. The practice of protecting the environment






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






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






27. A consumer that eats both plants and animals






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






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






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






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






32. Building up not out






33. Sex - weight - and health issues






34. The mating of animals in zoos or wildlife preserves






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






36. The number of different species in an area






37. Deals with biological hazards






38. Any substance that poses a chemical hazard






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






40. Help improve the standard of living for residents






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






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






43. Taking in carbon dioxide from the atmosphere during photosynthesis






44. Cooking oil - fuel - and medicines






45. Burning fossil fuels






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






47. Watering crops

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






49. Chemicals that causes harm to embryos and fetuses






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