It is the water that has already been used in homes and different industries., Scientists who work in water treatment plants., They are stations which recycle wastewater by removing harmful materials from wastewater to reuse it., The action of control reaching of humans to the natural resources or using them, The action of control reaching of humans to the natural resources or using them, The water bodies that surround the continents., They are small water bodies such as small creeks or streams that flow into bigger rivers., It is a land area which is partially covered with water., It is an area of land where all the water flows in one direction to a common location such as an ocean, a sea or other large water body., A phenomenon that happens due to the increase of the level of water in rivers and streams., A phenomenon that happens due to the decrease of the level of water in rivers and streams., It is the liquid that all living organisms need to live., A type of water which is suitable for drinking, A water body that often starts in the mountain as a stream., The large water body that is surrounded by land., A water body which contains a mixture of sea water and river water., The water that is stored in the cracks and spaces between underground rocks..

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