Water can be viewed as a renewable resource but to some extent, this resource is non-renewable since accessibility to clean water may be limited. There are various sources of water. These sources include: Rain. Rivers. Lakes and oceans....
A Cloud is made of water drops or ice crystals floating (漂浮) in the sky. There are many kinds of cloud. Clouds are of great importance to Earth’s weather. The sky can be full of water. But most of the time you can’t see the water. The drops of water are too small to see...
第1题 The two elements water is made are oxygen and hydrogen.A、that B、which C、of which D、with which 第2题 The crime was discovered till 48 hours later,gave the criminal plenty of time to get away.A、which B、that C、so D、what 第3题 The International Studies University,in 1951...
he said,is that the harvesting of deepwater coral for jewelry should be completely banned;because the corals grow at such an anemic(无活力的)rate,any level of harvesting would likely wipe out the
Every Autumn Equinox day, all the ___7___ ( village) go to pick Qiucai in the wild, which is taken back and made into soup with fish, ___8___ (name) Qiutang ( autumn soup ) .” On Autumn Equinox day, there ar...
InThe Write Structure, we talk about the six elements of plot: 1.Exposition. At the beginning of the story, the exposition establishes characters and setting. Not all your world-building happens here, but this is where you show your readers what “normal” is for your characters. That way,...
Rain falls from clouds for the same reason anything falls to Earth.The Earth's gravity pulls it.But every cloud is made of water droplets or ice crystal(冰晶).Why doesn't rain or snow fall constantly from all clouds?The droplets or ice crystals in clouds are extremely small.The effect ...
17.Drinking water is so important for good health.When in school.you learned what water is made up of.(31)GHowever.what you may not have learned is how much water you need in order to be healthy.As we all know.60% to 70% of the body is water.Your bo
Similarly, hydrogen and oxygen, which are both gaseous elements can combine to form water, which is a liquid compound, not a gas, at room temperature. The process by which such combinations and transformations of elements into compounds take place is called achemical reaction. ...
We think that the formation, the growth and the migration of Jupiter let these bodies which formed far out in the Solar System, cold bodies with water, be sent towards the inner zone, where they crashed into the still forming Earth, contributing their elements to it. These bodies, asteroids...