how much percent is the body made of water?
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Up to 60% of the human adult body is water. According to H.H. Mitchell, Journal of Biological Chemistry 158, the brain and heart are composed of 73% water, and the lungs are about 83% water. The skin contains 64% water, muscles and kidneys are 79%, and even the bones are watery: 31%.
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This is the activity that uses the most water worldwide By some estimates, a whopping 70 percent of all freshwater globally is used for agriculture. Since only 2.5 percent of the earth's water is freshwater, agriculture isn't just a burden on the water supply – it's a massive piece of a shockingly small pie.
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The vast majority of water on the Earth's surface, over 96 percent, is saline water in the oceans.
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There are generally two versions of the answer to this question. The first is the more general about 70% of Earth is water while about 30% is land (US Geological Society). The second is the more specific 71% of Earth is water while 29% is land.
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About 71 percent of the Earth's surface is water-covered, and the oceans hold about 96.5 percent of all Earth's water.
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Even though the planet is 71 percent water, the largest percentage of Earth's water is saltwater in the oceans and cannot be used for drinking. The table describes the main locations of water on Earth. Notice that about 98 percent of Earth's water is saltwater.
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Roughly 96% of the mass of the human body is made up of just four elements: oxygen, carbon, hydrogen and nitrogen, with a lot of that in the form of water. Are we breathing less than 50% of oxygen? How much oxygen is in our blood? What percent of oxygen does our body absorb during inhalation?
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Jeffrey Utz, Neuroscience, pediatrics, Allegheny University, different people have different percentages of their bodies made up of water. Babies have the most, being born at about 78%. By one year of age, that amount drops to about 65%. In adult men, about 60% of their bodies are water.
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Water covers about 71% of the earth's surface. 97% of the earth's water is found in the oceans (too salty for drinking, growing crops, and most industrial uses except cooling). 3% of the earth's water is fresh.
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Roughly 96 percent of the mass of the human body is made up of just four elements: oxygen, carbon, hydrogen and nitrogen, with a lot of that in the form of water.
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The ideal percentage for adult women will fluctuate between 45 and 60%, while the ideal percentage for adult men will be between 50 and 65% of the total body. For the real athletic body types it is even recommended to have 5% more body water than the average adult range.
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Fresh water on earth is only 2.5% of the total water when 70% of the earth's surface is covered by water. Around 70% of industrial waste is dumped to water. 80% of the water pollution is caused due to domestic sewage. More than 6 billion pounds of garbage, mainly plastic end up in the oceans every year.
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As these charts and the data table show, the amount of water locked up in ice and snow is only about 1.7 percent of all water on Earth, but the majority of total freshwater on Earth, about 68.7 percent, is held in ice caps and glaciers.
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To get the percentage of water in your body, assume 1 liter equals 1 kilogram and then divide your TBW by your weight. It's a simplistic estimate, but it will give you an idea if you're in a healthy range for percentage of water in your body.
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Amino Acids: The Body's Building Blocks of Protein. Most people have heard the statistic that their bodies are 60 percent water; however, did you also know that 20 percent of your body is made of protein? Proteins are like the construction crew in your body.
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Ice caps and global water distribution As these charts and the data table show, the amount of water locked up in ice and snow is only about 1.7 percent of all water on Earth, but the majority of total freshwater on Earth, about 68.7 percent, is held in ice caps and glaciers.
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While nearly 70 percent of the world is covered by water, only 2.5 percent of it is fresh. The rest is saline and ocean-based. Even then, just 1 percent of our freshwater is easily accessible, with much of it trapped in glaciers and snowfields.