Water is a limited resource
The Earth's water resources are limited. The earth is covered with up to 70% water. However, only 2.5% of this is fresh water. The rest is salt water. A large part of the fresh water is also bound in snow and glaciers, so that only 1% of the world's water resources are available to humans. In addition, water supplies are very unevenly distributed. Water is one of the most important natural treasures!