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. An organism that can make its own food






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






3. An organism that breaks down wastes and dead organisms






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






5. Pollution from a factory near your school






6. The practice of protecting the environment






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






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






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






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






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






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






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






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






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






16. Building up not out






17. Chemicals that cause cancer






18. Shift of population from countryside to cities






19. Leaving a population






20. Deals with biological hazards






21. Bumps on the roots of certain plants






22. Burning fossil fuels






23. Amount of land each person uses






24. A nonliving part of an organism's habitat






25. The most effective way of preserving biodiversity by protecting whole ecosystems






26. Taking in carbon dioxide from the atmosphere during photosynthesis






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






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






29. A consumer that eats only animals






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






31. Contamination of land - water - or air






32. Cooking oil - fuel - and medicines






33. The pattern of overlapping food chains in an ecosystem






34. The largest population that an area can support






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






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






37. Provide wood






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






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






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






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






42. Using public transportation






43. Moving into a population






44. Sex - weight - and health issues






45. Organism that carries pathogens






46. Are carefully controlled






47. Causes a cooling effect

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






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






50. Watering crops

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