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. The loss of a natural habitat






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






3. Pollution from a factory near your school






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






5. A consumer that eats both plants and animals






6. The highest level of biodiversity






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






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






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






10. An organism that breaks down wastes and dead organisms






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






12. A group of land ecosystems with similar climates and organisms






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






14. Rising sea level






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






16. A region that has many different types of organism is described as having a high level of this






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






18. Organism that carries pathogens






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






20. Using public transportation






21. Sex - weight - and health issues






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






23. Increase the stability of an ecosystem






24. Leaving a population






25. Making direct measurements






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






27. Taking in carbon dioxide from the atmosphere during photosynthesis






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






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






30. One way zoos and aquariums help increase wildlife populations






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






32. Watering crops


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






34. An organism that can make its own food






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






36. Deals with biological hazards






37. The study of how living things interact with each other and their environment






38. Any substance that poses a chemical hazard






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






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






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






42. Contamination of land - water - or air






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






44. Fires that are set by humans






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






46. This draws people from urban areas to rural areas






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






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






49. Burning fossil fuels






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