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Secretions and Excretions

We take much from nature and manipulate it to best meet our needs. The most obvious examples are, harvested and developed from the structural tissues of plants and animals whether this is trunks of trees for building houses or the muscles of animals. Of course there are many other products we take from the biosphere. We have a voracious appetite for embryonic plant tissue, for example, whether it be wheat, rice, corn or quinoa. Another familiar example is milk, whether this is bovine, ovine, caprine, bubaline or hominine. The list goes on and some of the entries are rather unexpected. More . . .

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