gap hydraulic pressure increase -> Effective stress decrease -> Shear strength decrease -> In stability fatal effect)
With like this principle ground(land subsidence), from underground water level lower part public corporation disruption many problem cause
A climate where our country yearly mean rainfall 2/3 became concentration at summer. Accordingly we must prepare for these problems.
rainfall, and heavy snowfall claim many lives as well. The disruption of the natural cycle is causing wildfires worldwide, and the ozone layer is being depleted, exposing us to lethal ultraviolet rays. While science and technology advance rapidly, the rate of species extinction on Earth has multiplied nearly a thousandfold due to human activity.
If species disappear, humans will eventually van
is heavily forested. On mountain slopes that receive plentiful rainfall, huge Douglas firs rise in towering columns. These forest giants often grow to be as much as 300 feet(90m) tall, with diameters up to 10 feet(3m). More lumber is produced from these trees than from any other kind of tree in North America. Hemlock, red cedar, and balsam fir are among the other trees found in British Columbia.
is heavily forested. On mountain slopes that receive plentiful rainfall, huge Douglas firs rise in towering columns. These forest giants often grow to be as much as 300 feet(90m) tall, with diameters up to 10 feet(3m). More lumber is produced from these trees than from any other kind of tree in North America. Hemlock, red cedar, and balsam fir are among the other trees found in British Columbia.
rainfall or in coastal regions where rivers flow into the ocean. Thus salinity may be increased by the subtraction of water by evaporation, or decreased by the addition of fresh water by precipitation or runoff.
Normally, in tropical regions where the sun is very strong, the ocean salinity is somewhat higher than it is in other parts of the world where there is not as much evaporation. Similarly,