The Water Cycle The amount of water on Earth doesn't change, but water changes its Predpitation douds for↑↑↑state in a process (过程) known as the4water cycle.Sur When the Sun heats up water in Accumulation rivers, lakes and seas, it changes from a liquid into a gas called water...
The water on Earth has been moving all the time for billions of years. It travels from ocean to air to land and back to the ocean. This continuous movement is called the water cycle, and it is the reason that earth has the same amount of water today as it did back in the days of...
Most of the earth is covered with water. About 70 per cent of the water on earth is in the oceans,but water also exists in rivers and lakes. It occurs as ice or water vapour in the air. All together, there are about 330 million cubic (立方体的) miles of water on earth.孟国凯浙江...
The water cycle is important in protecting our Earth's climate (气候). It provides us with water to drink and keeps our climate healthy. On top of that, it takes water from rivers and oceans and brings it to the areas that don't have enough water. Without the cycle, we would face ...
根据“Understanding the water cycle can help us enjoy the beauty of nature, know how our planet works and develop better methods to protect our Earth. And that is a responsibility we should take on.”并通读全文可知,本文介绍了水循环的作用,作者在最后指出了解水循环可以帮助我们欣赏大自然的美丽,...
Water on the earth is being continuously recycled in a process known as the hydrologic cycle. The first step of the cycle is the evaporation of water in the oceans. Evaporation is the process of water turning into vapor, which then forms clouds in the sky. The second step is the water ...
(1) (call) the water cycle.However,the amount (数量) of freshwater in our world is not spread evenly (均匀地) across the planet.People living in cities use the most water, (2) some people have only a small amount for their (3) (...
Water is important for all living things on Earth.The water cycle (循环) is a natural process that takes water from the ground and the sky and (1) C it back to the earth again.It is a cycle that happens the whole year and is the most active from March (2) D June in China.In ...
根据文中第2段:Thewatercyclealwaysbeginswithwatervapour(蒸汽).Whenit'shotoutside,youcanseecloudsforminginthesky.Thesecloudsaremadeofwatervapourthatcomesfromtheground,plantsandrivers.Aswatervapourrisesintothesky,itcoolsdownandbecomesclouds.Afterthat,cloudstravelthroughtheskyandfallbacktoEarthasrainorsnow.Then,...
水的循环(The Water Cycle) water can change from one form to anotheer. the heat of the sun evaporates water from the oceans, seas, rivers and lakes. the heat also evaporates water from the ground and from plants and animals. water vapour is formed. this forms clouds in the air. when ...