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. Moving into a population






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






3. Amount of land each person uses






4. Organism that carries pathogens






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






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






7. Deals with biological hazards






8. Chemicals that cause cancer






9. One way zoos and aquariums help increase wildlife populations






10. Contamination of land - water - or air






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






12. The number of different species in an area






13. Any substance that poses a chemical hazard






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






15. Sex - weight - and health issues






16. Pollution from a factory near your school






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






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






19. The highest level of biodiversity






20. A living part of an organism's habitat






21. Provide wood






22. An organism that breaks down wastes and dead organisms






23. 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






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






25. The loss of a natural habitat






26. The mating of animals in zoos or wildlife preserves






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






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






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






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






31. Habitat change and fragmentation






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






33. Cooking oil - fuel - and medicines






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






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






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






37. A series of events in which one organism eats another and obtains energy






38. Fires that are set by humans






39. A consumer that eats only plants






40. Increase the stability of an ecosystem






41. The breaking of a habitat into smaller - isolated pieces






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






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






44. Land that is sparsely populated and has few buildings or roads






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






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






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






48. A group of organisms that are physically similar and can mate with each other and produce offspring that can also mate and reproduce






49. Causes a cooling effect

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


50. Building up not out