what percentage of the earth is made of water?
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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. Water also exists in the air as water vapor, in rivers and lakes, in icecaps and glaciers, in the ground as soil moisture and in aquifers, and even in you and your dog.
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At least half of Earth's oxygen comes from the ocean. Though they're invisible to the naked eye, they produce more oxygen than the largest redwoods. Scientists estimate that 50-80% of the oxygen production on Earth comes from the ocean.
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Lutgens and Edward J. Tarbuck, Earth's crust is made up of several elements: oxygen, 46.6 percent by weight; silicon, 27.7 percent; aluminum, 8.1 percent; iron, 5 percent; calcium, 3.6 percent; sodium, 2.8 percent, potassium, 2.6 percent, and magnesium, 2.1 percent.
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The oceans make up 70 percent of the planet and contains 97 percent of all the water on Earth. The vast amount of water stores the majority of the planet's moisture, terrestrial energy, and heat from the Sun.
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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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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. Source: Gleick, P. H., 1996: Water resources.
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Rivers make up 0.49% of surface freshwater. Although rivers account for only a small amount of freshwater, this is where humans get a large portion of their water.
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In simplest terms, water makes up about 71% of the Earth's surface, while the other 29% consists of continents and islands.
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Answer and Explanation: The percent composition of water is 11.19 percent hydrogen and 88.81 percent oxygen.
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Water Facts - Worldwide Water Supply 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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Eight elements make up 98% of the Earth's crust: oxygen, silicon, aluminium, iron, magnesium, calcium, sodium and potassium. The composition of minerals formed by igneous processes is directly controlled by the chemistry of the parent body.
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About 97% of Earth's water is contained in oceans and seas. ... Seas are smaller bodies of salty water within the oceans. The oceans are salty, which makes them unsuitable for drinking. Most of the salt comes from minerals from rocks and soil that have been washed from the land and carried into the oceans by rivers.
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Water is of major importance to all living things; in some organisms, up to 90% of their body weight comes from water. Up to 60% of the human adult body is water.
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5: They Contain Much of the World's Fresh Water Technically the Great Lakes hold one-fifth of the world's fresh surface water. ... Some 97 percent of all the water on our planet is saltwater. And most of the globe's freshwater supply is either frozen in glaciers or buried underground.
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about 97 percent is contained in the ocean. and glaciers hold between 70 and 80 percent of earths freshwater.
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That doesn't seem like it could be true. The oceans account for 70 percent of Earth's surface. In other words, humans haven't yet explored or discovered about 65 percent of Earth's surface area.