[driftdiver]

The point being that just because something is “naturally occurring” someplace on the planet doesn’t mean that a “nature can clean itself” approach is valid.

[Wonder Warthog]

"The point being that just because something is “naturally occurring” someplace on the planet doesn’t mean that a “nature can clean itself” approach is valid."

No, but it is a good indication. However, we have LOTS of data that says that the "nature can clean itself" DOES happen, and quite rapidly.