Water is the foundation of all things, which is conducive to the growth of living things and the greening of the environment. For example, the desert in the north urgently needs water to improve the environment. Precipitation regulates the dry humidity of the air and has an important impact on human health;
Water cycle, from the sea → mountainous area → back to the sea, realizes energy cycle and material cycle (overview). When water rises from the sea surface, the evaporation process absorbs heat, which reduces the climate temperature in coastal areas;
When moving to the mountains, water vapor will form raindrops with small solid particles such as dust as the core, thus purifying the air and realizing surface water supply;