Image and video hosting by TinyPic

GET SPECIAL FROM AMAZON

Image and video hosting by TinyPic
Image and video hosting by TinyPic

Thursday, June 3, 2010

Water is essential for life

Water is essential for life. The amount of fresh water on earth is limited, and its quality is under constant pressure. Preserving the quality of fresh water is important for the drinking-water supply, food production and recreational water use. Water quality can be compromised by the presence of infectious agents, toxic chemicals, and radiological hazards.

No comments:

Post a Comment

Image and video hosting by TinyPic
Image and video hosting by TinyPic