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 number of different species in an area






2. Sex - weight - and health issues






3. A consumer that eats only animals






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






5. The pattern of overlapping food chains in an ecosystem






6. Process of measuring the chance that an environmental hazard will cause harm






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






8. Pollution from a factory near your school






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






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






11. Using public transportation






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






13. Are carefully controlled






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






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






16. A consumer that eats only plants






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






18. The highest level of biodiversity






19. The loss of a natural habitat






20. A nonliving part of an organism's habitat






21. Can result in a decrease of property damage






22. The practice of protecting the environment






23. Chemicals that cause cancer






24. The mating of animals in zoos or wildlife preserves






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






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






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






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






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






30. Provide wood






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






32. By increasing the need for people to drive






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






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






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






36. The largest population that an area can support






37. Amount of land each person uses






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






39. A species that is at risk of extinction






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






41. Increase the stability of an ecosystem






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






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






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






45. Bumps on the roots of certain plants






46. The form of transportation that uses the most energy per passenger mile






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






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






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






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