| | AllRefer.com - bog (Geology And Oceanography) - Encyclopedia |
 | | Because of this formation bogs are sometimes treacherous (quaking bogs shake under the weight of a man) and have occasionally resulted in fatalities when a man or animal breaks through the vegetative crust. |
 | | Because of their extreme acidity, bogs form a natural preservative and have been found to be a valuable repository of animals and plants of earlier times. |
 | | Another consequence of the drainage and filling of bogs is the decreased water-holding capacity of the land, resulting in rapid run-off during rains and the increased siltation of rivers and streams. |
| reference.allrefer.com /encyclopedia/B/bog.html (376 words) |