Where do all the dead people go?

Dead people don't add up to the amount of bodies in cemeteries, in the US an estimate of 8000 people die daily, which in a year adds up to over 2 million people a year, cremation is more popular than traditional burial in the US so if you do the math, counting the 60% that choose cremation that's still 800,000 people a year that prefer burial, I know there's not that much cementary land to plot down 800,000 holes without using none cementarial land every year so where all the dead people going?
Where do all the dead people go?
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