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. Are carefully controlled






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






3. The process of changing free nitrogen gas into a usable form






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






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






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






7. Habitat change and fragmentation






8. One way zoos and aquariums help increase wildlife populations






9. Increase the stability of an ecosystem






10. A species that is at risk of extinction






11. Sex - weight - and health issues






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






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






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






15. Moving into a population






16. The mating of animals in zoos or wildlife preserves






17. The process of cutting down all the trees in an area at once






18. Making direct measurements






19. Burning fossil fuels






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






21. Bumps on the roots of certain plants






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






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






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






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






26. Chemicals that causes harm to embryos and fetuses






27. A virus or bacterium (organisms) that cause infectious diseases






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






29. Resulted in suppression of all forest fires

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30. A living part of an organism's habitat






31. Illegal killing or removal of wildlife from their habitats






32. Taking in carbon dioxide from the atmosphere during photosynthesis






33. A consumer that eats only animals






34. A consumer that eats both plants and animals






35. Building up not out






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






37. Has the highest amount of species diversity






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






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






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






41. A form of decision-making concerned with the allocation and conservation of natural resources






42. Chemical hazard that was once found in paint - young children are frequently tested for this






43. The pattern of overlapping food chains in an ecosystem






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






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






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






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






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






49. This draws people from urban areas to rural areas






50. Using public transportation