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It may take thousands of years for the ecosystem to recover by itself. Human destruction of habitats is a faster mechanism, and will always win if we do nothing to revert it. Also, biodiversity is a good thing in itself.

There's nothing wrong with recovering ecosystem. The Amazon forest was man-made, for example. It doesn't make it any less important.

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> The Amazon forest was man-made

Was it?

I raised my eyebrow at that comment and found [1] and [2] which mentions evidence of human influence in the region, though I can't watch that BBC doc in my region, the paper is pretty interesting in there appears to be some lost civilization buried under the trees. That paper is from 2003 so I'd imagine there's more up to date research somewhere out there. I'd consider the statement "man-made" to be massively exaggerated unless proven otherwise.

[1] https://www.bbc.co.uk/programmes/b0122njp [2] https://www.semanticscholar.org/paper/Amazonia-1492%3A-Prist...

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