why is the water in the world many?
402321
I was told that it was becuase of the mountains.The ice or snow of mountains would melt into water,forming small rivers that turn into more and more bigger rivers{or something like that} that turn into oceans."Where does the snow of a mountain or ice of a mountain come from?",you might ask.That I dont know.
120972
The water in this planet can support all of it inhabitant but places like desert have difficulties in getting enough water. We need water because we use water as a medium to cool down.
664364
There's actually a number of reasons why water does that. Yes, cooler or warmer water can come in and make water differ in temperature in different parts of the body of water. Another reason is that water takes a lot longer to cool or heat than many other things like the earth. The depth of the water makes an impact also. The sun's rays passing through the water faster at different depths heat water when it's not as deep.
576376
The water in the Great Lakes came from the end of the last major ice age. That entire regions was covered in thick, deep glaciers and when they all melted the Great Lakes were formed. Glacial ice was obviously frozen fresh water. I imagine rain keeps the water levels up.
804217
the ocean is like the wind it has layers of different kinds of salinity of water and tempratures.it has currents going one way and the deeper you go they go an other way some are slow while others can move at highway speeds.it is what keeps the oceans stired up .hot water on the top while you have very cold dense water on the bottom,the heat of the earth is the engine of life
1125651
Yes it is. The water is constantly recycled, between lakes, groundwater, rivers, seas, ice caps/galciers, clouds, used by humans etc. (Not in this order though)\n\nThe only time that there is any 'new' water introduced is when a volcano erupts.
24556
Everyone who has been to the beach knows that seawater is salty. Everyone also knows that fresh water in rain, rivers, and even ice is not salty. Why are some of Earth’s waters salty and others not? There are two clues that give us the answer. First, “fresh” water is not entirely free of dissolved salt. Even rainwater has traces of substances dissolved in it that were picked up during passage through the atmosphere. Much of this material that “washes out” of the atmosphere today is pollution, but there are also natural substances present.\n\nAs rainwater passes through soil and percolates through rocks, it dissolves some of the minerals, a process called weathering. This is the water we drink, and of course, we cannot taste the salt because its concentration is too low. Eventually, this water with its small load of dissolved minerals or salts reaches a stream and flows into lakes and the ocean. The annual addition of dissolved salts by rivers is only a tiny fraction of the total salt in the ocean. The dissolved salts carried by all the world’s rivers would equal the salt in the ocean in about 200 to 300 million years.\n\nA second clue to how the sea became salty is the presence of salt lakes such as the Great Salt Lake and the Dead Sea. Both are about 10 times saltier than seawater. Why are these lakes salty while most of the world’s lakes are not? Lakes are temporary storage areas for water. Rivers and streams bring water to the lakes, and other rivers carry water out of lakes. Thus, lakes are really only wide depressions in a river channel that have filled with water. Water flows in one end and out the other. \n\nThe Great Salt Lake, Dead Sea, and other salt lakes have no outlets. All the water that flows into these lakes escapes only by evaporation. When water evaporates, the dissolved salts are left behind. So a few lakes are salty because rivers carried salts to the lakes, the water in the lakes evaporated and the salts were left behind. After years and years of river inflow and evaporation, the salt content of the lake water built up to the present levels. The same process made the seas salty. Rivers carry dissolved salts to the ocean. Water evaporates from the oceans to fall again as rain and to feed the rivers, but the salts remain in the ocean. Because of the huge volume of the oceans, hundreds of millions of years of river input were required for the salt content to build to its present level. \n\nRivers are not the only source of dissolved salts. About twenty years ago, features on the crest of oceanic ridges were discovered that modified our view on how the sea became salty. These features, known as hydrothermal vents, represent places on the ocean floor where sea water that has seeped into the rocks of the oceanic crust, has become hotter, and has dissolved some of the minerals from the crust, now flows back into the ocean. With the hot water comes a large complement of dissolved minerals. Estimates of the amount of hydrothermal fluids now flowing from these vents indicate that the entire volume of the oceans could seep through the oceanic crust in about 10 million years. Thus, this process has a very important effect on salinity. The reactions between seawater and oceanic basalt, the rock of ocean crust, are not one-way, however; some of the dissolved salts react with the rock and are removed from the water.\n\nA final process that provides salts to the oceans is submarine volcanism, the eruption of volcanoes under water. This is similar to the previous process in that seawater is reacting with hot rock and dissolving some of the mineral constituents.\n\nWill the oceans continue to become saltier? Not likely. In fact the sea has had about the same salt content for many hundred of millions if not billions of years. The salt content has reached a steady state. Dissolved salts are being removed from seawater to form new minerals at the bottom of the ocean as fast as rivers and hydrothermal processes ar
232284
The waters of the oceans are pulled downwards by gravity; they flow around the planet in currents.  The continents shift and drift and the water flows into the spaces left.  The moon's gravity pulls the water and creates tides.  The waters of our little planet are in constant motion.
21135
water on the ground, in oceans, lakes, etc. has enough energy to evaporate a little bit (all liquids have a "vapor pressure," which is higher the hotter it is).  eventually, there is too much water in the air at whatever air temperature it is, so the water re-liquifies and falls.  this can commonly happen when a warm front (warm air holds lots of water) is cooled by a cold front.
676335
Where do you find water that often?
1157540
water beacuse of the long dry season
702485
Though 78% of the earth are water bodies, as per a study 88% of the water available in the world is from seas and oceans and not potable. Desalination in some areas are done at a very high cost which is only 0.007%, so it is very negligible. Of the balance 12% or less 50 percent of all potable water is wasted or lost in the developing world; Pollution, with some 2 million tons of human excrement and an ever-increasing volume of untreated discharge from industry going into urban water supplies every day. The ground water table is also depleting very fast and getting contaminated or many areas have become dry. This accounts for +3%. The balance of 3 % are so is available now.\n\nIn the developing world, more than 1 billion people cannot get clean drinking water, and 1.7 billion people lack access to adequate sanitation facilities. The United Nations says that dirty water causes 80 percent of diseases in the developing world, and kills 10 million people annually.\n\nWATER CRISIS IS LIKELY TO STRIKE MOST DEVELOPING WORLD CITIES BY 2010. \n\nThus the position is very alarming and water conservation and Storm water harvesting are being implemented by many countries to save the situation.
180097
Most living things, including people, are about 80% water.
437196
not all valleys, but many do.  it's a good spot for civilizations to start, since there's usually a supply of water.
128882
I agree.  They pretty much all need water, but they can take up many different substances.  In some circles, it is believed that for every substance in the world, there is a microorganism that can break it down.  Things like nitrogen, different carbon sources and a polethora of other things are commonly taken up by bacteria.
609105
The Seven Seas is a figurative term referring to all the seas and oceans of the world. Some folks will tell you the seven seas are the Arctic, the Antarctic, the North and South Pacific, the North and the South Atlantic and the Indian Ocean. But the term was never meant to be taken literally.\nThe phrase was popularized by Rudyard Kipling who used it as the title of a volume of poems first published in 1896. Kipling himself said the term might be regarded as referring to the seven oceans (named above) even though it was a very old figurative name for all the waters of the world.\nThe Seven Seas was part of the vernacular of several nations long before some of the oceans named were known to the inhabitants of Europe and Asia. The Seven Seas are referred to in the literature of the ancient Hindus, Chinese, Persians, Romans and other nations. In each case, the term simply referred to different bodies of water. Sometimes it even referred to mythical seas. To the Persians, the Seven Seas were the streams forming the Oxus River; the Hindus used the term for the bodies of water in the Punjab. There is a group of salt-water lagoons near Venice, Italy, that the Romans called septem maria, the Latin phrase for Seven Seas.\nAnd don't forget, seven is a pretty special number. The world was formed in seven days. There are seven wonders of the world, seven deadly sins, seven gifts of the Holy Spirit, seven hills of Rome, seventh heaven and don't forget Mark McGwire hit 70 home runs this year. Some even consider seven a perfect number.\nWho am I to disagree?\n\nHowever here is a list of the "seven seas" given by various people of various times and of experts of different fields.\n\nMany experts and encyclopedias will list the modern Seven Seas as the: \n\nArctic \nAntarctic \nNorth and South Atlantic \nNorth and the South Pacific \nand the Indian Ocean \n\nDuring the Age of Discovery (1450-1650), some list the Seven Seas as the then seven navigable seas of the world: \n\nAtlantic \nArctic \nIndian \nand Pacific Oceans \nand the \nMediterranean Sea, \nthe Caribbean Sea, \nand the Gulf of Mexico \n\nWhile others disagree and report the ancient Seven Seas to be the: \n\nMediterranean Sea \nRed Sea \nBlack Sea \nAdriatic Sea \nCaspian Sea \nand the \nPersian Gulf \nand the Indian Ocean
526049
my guess is the oceans, and other bodies of water, i.e. lakes, rivers, and streams!