Earlier quoted context omitted.
But the resulting ash isn't biodegradable. Cemetery land can be reused after full decomposition and after enough time has passed.
How is it not biodegradable? It's mostly carbon and calcium, right? In which case it's as natural as it can be - saying it's not biodegradable is like saying that rocks are not biodegradable. You could probably use it as a fertilizer(not that you would want to, respect towards the deceased and all that) and it would be absolutely fine. Cemetery land is essentially locked for hundreds of years, probably more since no…
That's exactly what I'd want my ashes used for.