There is much more water than land on the surface of the earth. The seas and oceans cover nearly four-fifths of the whole world, and only one-fifths of its. If you traveled over the earth in different directions, you would have to spend much more of your time moving on water than on roads or railways. We sometimes forget that for every mile of land there is four miles of water.
There is much water on the surface of our earth that we have to use two words to describe. We use the word seas to describle those parts of water surface which is only a few hundreds of miles wide, the word oceans to describe the huge areas of water which are thousands of miles wide and very deep
đang được dịch, vui lòng đợi..
