Somewhere in this process—between the large amount of original material and the tiny fraction that is left as humus— lies The entire composting process can be seen on any woodland floor. On the surface are freshly fallen, unaltered leaves. Dig down a little way and the leaves become more fragmented and much less distinct. Eventually, you will come to a dark, crumbly material in which the original leaves are quite unrecognizable. This is usually called leafmold, but it’s just a special variety of compost, made only from tree leaves rather than the usual mixture of materials.
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