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...free of human made [[w:pesticide|pesticide]]s and chemical [[w:fertilizer|fertilizer]]s. It does not disrupt the local ecology and is probably of local origin

...ent]] can be used as fuel for [[heating]] or [[cooking]] or as a natural [[fertilizer]]

...]] effort dealing with [[agriculture]] and especially [[irrigation]] and [[fertilizer]] and [[manure]] handling. It specifies among other things that pig farms