Water is the most common substance on earth, it blanketed more than 70% of the earth’s surface. Water is everywhere, it is in the air, on the surface, in the soil, even in the body of every living being. Available in a variety of forms, vaporous, solid, liquid, or combine with other elements.
Water plays an important role in life, it guarantees the process of life. It also plays an important role shaping climate and weather, participate in maintaining the temperature at which it is located, even joined in the atmosphere is also a natural shield for the earth.
And humans are used for various purposes, such as for drinking, cooking, washing, bathing, treating disease. Also for the larger interest, such as firefighters, transport links, source of propulsion turbines, etc..
Then the question is, if the use of water so large, what will happen when the supply runs out. No need to worry because nature has a unique way to make the recycling process. The fact is, the water that we use today have been used repeatedly, which also has undergone recycling process many times. So this is a cycle that will never ending.
The sun is one of the keys of water cycle. The heat of the sun will evaporate the water that is in the land and sea. The vapor is also contained in the transpiration process of plants, also in human and animal respiration.
Next step of water cycle, vapor in the rising air forming clouds. Then clouds in the atmosphere will experience the process of condensation, forming water droplets, snow or ice. In time they came down to earth and is referred to as rain.
Most of the water that falls to the ground surface will be absorbed to be stored as ground water reserves and is also used by plants. Most of that is not absorbed by the soil, surface flow and is the cause of erosion and flooding, became warning for mankind.
Water flowing on the surface of the ground to form small rivers. They continue to flow toward lower gated and coalesce to form large rivers. And soon large rivers has set the goal, straight to the sea.
As long as the earth is still spinning then recycle this water cycle will never end. Humans will continue to consume water that has been used repeatedly before. And nature plays an important role as a giant filter that will ensure the purity of water through the water cycle.