1. HISTORICAL DEVELOPMENT AND FUTURE TRENDS IN HYDRAULIC TURBINE DESIGN HISTORY Waterwheels are considered to be the ancient version of a modern hydraulic turbine. Waterwheels…

Main Types of Water Pollution in Hong Kong Source of Stream Pollution Source of Marine Pollution Cause of Water Pollution in Hong Kong Effect of Water Pollution in Hong Kong…

Slide 1 Water pollution. What causes water pollution? Water Pollution Clean water is important to everyone â for drinking, swimming, growing food, playing, showering and…

11-1 Water Resources Fresh Water is a very limited resource! Liquid fresh water for human use is even more limited! (comes mainly from lakes, rivers, groundwater) 71 % of…

Water Resources Water Resources Geography 20G Water Everywhere Water covers nearly three-quarters of the earth's surface, mainly in oceans but also as rivers, lakes,…

Slide 1 Water pollution EXAMPLE PICTURES OF WATER POLLUTION What is water pollution? Water pollution can be defined in many ways. Usually, it means one or more substances…