How much calcium does the whole of humanity need per year?<br />If one person needs one gram of calcium per day, then the entire population of the Earth, which is 7.8 billion people, needs 7800 tons of calcium per day.<br />This amount reaches 2.8 million tons of calcium per year.<br />This is approximately 30% of the weight of the Cheops pyramid.<br /><br />#calcium #humanity #Interestingfacts #Science #Chemistry #Cheopspyramid #Calciuminterestingfacts #Needcalciumhumans #Populationearthfacts #Scienceinterestingfacts #Worldpopulationfacts #amazingfacts #sciencefacts
