1.3-POLYMER FIBER REINFORCED CONCRETE:-Civil structures made of steel reinforced concrete normally suffer from corrosion of the steel by the salt, which results in the failure of those structures. Constant maintenance and repairing is needed to enhance the life cycle of those civil structures.
The water cycle, air pressure, and weather are actually very closely related. The water cycle is the process of water being drawn up from the ground into the sky, where air pressure is lower. (Pressure gets lower as altitude increases, since there is less air available to press down).
One very important cycle is the water cycle. This is how. water is transferred all over the world. Water moves through the atmosphere, the hydrosphere. (oceans and other bodies of water), and the lithosphere (both above and below ground). Water even. moves through the biosphere - all living things need and use water.