It's not just the humus, an aged forest also has at least 7 layers of carbon sequestration. https://geographyiseasy.files.wordpress.com/2013/12/layers-in-the-t

It's not just the humus, an aged forest also has at least 7 layers of carbon sequestration. https://geographyiseasy.files.wordpress.com/2013/12/layers-in-the-tropical-rainforest.jpg https://geographyiseasy.files.wordpress.com/2013/12/layers-i...