I find that believable, but we're talking about carbon, not oxygen. Forests do sequester carbon for a period, although most of it is released again in fires an

I find that believable, but we're talking about carbon, not oxygen. Forests do sequester carbon for a period, although most of it is released again in fires and decomposition (chemically just a slow fire.) But the point is that a forest locks up a lot of carbon compared to cleared grazing or cropland.