Water is the origin of lives.They make up our body and satisfy our desire.Nothing can be equal to water.Although technology has developed since fire was discoverd,we couldn't avoid the fire disaster without water.Besides,water can purify the air ,the earth and our lives.It is what a role water has played in that counts in today's environment becoming worse and worse
In brief ,water has a lot of usefulness.
2. 水是怎样循环的,用英文写一个小短文The water cycle, also known as the hydrologic cycle. It is the continuous movement of water on, above and below the surface of the Earth. Water can transform into various stage of Ice, rain, vapor in the process. The water movement is done by the physical processes of evaporation, condensation, precipitation, infiltration, runoff, and subsurface flow. In so doing, the water goes through different phases: liquid, solid, and gas.
The water cycle figures significantly in the maintenance of life and ecosystems on Earth. The water cycle brings added significance to the presence of water on our planet. By transferring water from one reservoir to another, the water cycle purifies water, replenishes the land with freshwater, and transports minerals to different parts of the globe. In addition, as the water cycle involves heat exchange, it exerts an influence on climate as well.
