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






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






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






4. Are carefully controlled






5. Can result in a decrease of property damage






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






7. Taking in carbon dioxide from the atmosphere during photosynthesis






8. Organism that carries pathogens






9. Energy from the sun would be reflected back into space






10. Resulted in suppression of all forest fires






11. Watering crops






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






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






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






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






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






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






18. A behavior or physical characteristic that allows an organism to live successfully in its environment






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






20. 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






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






22. Causes a cooling effect






23. Chemicals that causes harm to embryos and fetuses






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






25. Leaving a population






26. Sikhote-Alin mountains and the Siberian tigers living there are separated from other mountains by this






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






28. A species that is at risk of extinction






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






30. Provide wood






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






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






33. Burning fossil fuels






34. Deals with biological hazards






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






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






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






38. One way zoos and aquariums help increase wildlife populations






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






40. Chemicals that cause cancer






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






42. A consumer that eats both plants and animals






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






44. Sex - weight - and health issues






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






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






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






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






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






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