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Water drunk by us is the water drunk by dinosaurs.

Water drunk by us is the water drunk by dinosaurs.

The amount of water on Earth has not changed for millions of years. What changes is its phase. Thanks to solar and gravitational energy, water keeps circulating between the atmosphere, hydrosphere and lithosphere in a closed loop.
Water intake can be excessive.

Water intake can be excessive.

Excessive water intake can be equally dangerous as dehydration. Our kidneys are able to filter up to 1.5 l of liquids per hour. Drinking greater amounts of liquids can cause hyperhydration of your body. Frequent symptoms include nausea, vomiting, breathing problems, swelling of the body, disturbance of consciousness, dystonia or even, in most extreme cases, coma.
Water changes its hue depending on organic and mineral compounds.

Water changes its hue depending on organic and mineral compounds.

Travelling round the world, you can see green, azure, emerald or light blue seas and lakes. Ferrous salts give green and blue colour, manganese (depending on its amount) tints water yellow to brown. The water with sulphur seems blue. Hydrogen sulphide brings emerald hue, while plankton and algae, as well as tiny water plants make water green.
More than one billion people have restricted access to water.

More than one billion people have restricted access to water.

63% out of 1.2 billion people with restricted access to water live in Asia, 28% in Africa, 7% in South America and 2% in Europe. In North America and Australia there are no people with restricted access to water. Women and children in many African countries walk about 6 km a day, carrying 20 litres of water. According to the statistics, a Pole uses about 200–300 litres of water a day, while e.g. in Mozambique it is 10 litres of water a day per one inhabitant.
Camels going in caravans through the desert do not need to drink water for a long time.

Camels going in caravans through the desert do not need to drink water for a long time.

Why? Camels have fat resources in their humps and their bodies can use it to produce energy in times of crisis. In the process of fat transformation, they get water as the byproduct. This means it is not true camels store water in their humps.
Water volume increases as the temperature falls.

Water volume increases as the temperature falls.

For different substances, the volume of liquid grows with the temperature increase. For water, however, it is different. Its volume grows at less than 4°C. This is termed anomalous expansion of water. It is of immense importance for the natural environment. In winter, when the temperatures fall rapidly, ponds and lakes are covered with ice. Water with highest density keeps near the bottom and enables fish and other organisms to survive.