Does it ever decompose or turn into something? If no, then theoretically, if we burned all dead bodies for trillions of years, would earth eventually run out of supply because there was only ash left, thus life would end? Sorry if this sounds stupid
In: Chemistry
No, in many ways.
You can’t burn all the bodies of humans for trillions of years because in 5B years the Sun will be a red giant reaching to the Earth’s orbit and the whole planet will have melted and been consumed by the Sun.
The bodies of all the humans isn’t really a lot of mass. There are 7.2B humans on the planet today, let’s say they weigh a combined total of about 350B kg. The Earth’s surface is 500M km^2. That’s 700kg/km^2 or 7kg/hectare. Normal fertilizer usage is 200kg/ha, so frankly there just isn’t enough human mass on this planet to make any meaningful impact.
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