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. Chemicals that cause cancer






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






3. A large area heavily populated like Miami - Florida or Toledo - Ohio






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






5. The amount of replacement is equal to the amount harvested






6. The number of different species in an area






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






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






9. The loss of a natural habitat






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






11. Making direct measurements






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






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






14. Provide wood






15. Burning fossil fuels






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






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






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






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






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






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






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






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






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






25. Can result in a decrease of property damage






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






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






28. A species in danger of becoming extinct in the near future






29. Businesses are arranged in a long row along a roadway - with no main community






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






31. An organism that can make its own food






32. Habitat change and fragmentation






33. An organism that breaks down wastes and dead organisms






34. Using public transportation






35. Pollution from a factory near your school






36. Bumps on the roots of certain plants






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






38. The highest level of biodiversity






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






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






41. Rising sea level






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






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






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






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






46. Causes a cooling effect


47. The practice of protecting the environment






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






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






50. A consumer that eats both plants and animals