Therefore, it is necessary to consider the repair of water bulbs with low costs. Resort Development Resort places has been developed all over the world. Golf courses on hills, and leisure centers at the seaside have been constructed after destroying beautiful nature. The construction of a golf course required deforestation, and it destruct the ecosystem. The ability of store water is declined, and the amount of ground water is decreased.
Agricultural chemicals flow into reivers, and it pollutes ground water and ocean.
Recently, it is claimed that coral is suffocated to death because of red clay. The development, which is for us to enjoy nature, is destroying the beauty of nature controversially. As a world recent trend, urbanizations occur along coasts. At least half of world population live in area within 100 kilo meters from Coasts. 9 of the largest 10 cities are located near coast, and two thirds of the largest 50 cities are located near coasts.