Water on Earth
The total volume of water on Earth is small compared to its size (see photo below, USGS source).
On the latter, only 4 % of the water is potable (big blue bubble on the photo), but only 1% is exploitable (for human consumption). 70 % of the water on Earth is consumed by agriculture (for example the production of 1 kg meat asks 15,000 liters of water!), 20% by industry and 10 % from domestic consumption
The human being is made up of +/-65% of water (varies according to the age), just like the planet Earth. Only 3% of this water is soft, therefore drinkable, but only 1% is accessible (likely to be taped for human consumption) 70% of water on Earth is consumed for agriculture (e. g. the production of 1 kg of meat needs 15,000 liters of water!), 20% by industries and 10% for domestic consumption