Clean Water
Water is essential need for all life, not just humans but plants and animals need it as well. We know that more than 90% human body is liquid and if less our body will be unbalance and could be a negative effect for other organs.
What we need is not just ordinary water but clean water and healthy water because we have to keep our health and survive for life. Now clean water becomes big issue in several countries because everyday people need it but there is no enough nature resource to supply. Alternative way is trying convert existing water resource like river, lake or sea become clean water. Some scientist already hard work to provide machines of water purifiers for better life and we always hope someday we can get better life with new water resource
