Water pollution is the contamination of water bodies such as lakes, rivers, oceans, and groundwater caused by human activities, which can be harmful to organisms and plants which live in these water bodies. Although natural phenomena such as volcanoes, algae blooms, storms, and earthquakes also cause major changes in water quality and the ecological status of water, water is typically referred to as polluted when it impaired by anthropogenic contaminants and either does not support a human use (like serving as drinking water) or undergoes a marked shift in its ability to support its constituent biotic communities. Water pollution has many causes and characteristics. This book concentrates on lake pollution.
Boka beskriver 20 turer til velkjente vann og vassdrag i og rundt Oslo.
Sven Martinson arrives in America from a farm in Norway. Both choose Minneapolis, the City of Lakes, to look for jobs. They meet and fall in love on the shores of Lake Calhoun, only to have another war begin. The Korean War.
A collection of original short stories of tales of summer romance on Minnesota lakes.
This study was conducted in response to concerns raised by local residents about water quality in Fisherman Lake, located 18 kilometres north-west of Fort Liard, Northwest Territories.
Ji jing de ao da li ya xiao zhen, yi ju nian qing mao mei de nü jiao shi shi ti jing xian xiao zhen hu mian, ling ren bai si bu jie de shi ta de shi ti pang jing ran bai man le mei gui hua! nü jing cha jie ma di da fan zui xian chang, ta ...
本书介绍了亚洲,非洲,欧洲,美洲等世界各地的名水.
Engineering Approaches for Lake Management
Engineering Approaches for Lake Management: Data analysis and empirical modeling
... have learnedtocombine the utile with the dulce, and here, in October 1859, came Queen Victoria to turn on the water for the supply of Glasgow. Many and fierce werethe controversies as to this scheme. ButLord Provost Stewart, who was ...
The new edition covering the Italian lakes of Garda, Lugano, Iseo, Como, Orta, Maggiore and the cities of the Lombard Plain: Pavia, Cremona and Mantura, as well as the link city to the lakes, Milan -- the mecca of finance and fashion.