Then there is the much overlooked area of agriculture in which many fertilizers and pesticides contain heavy metals. Taiwan's pig farmers, for example, bring about increases in "productivity" by making pigs grow quicker and larger through the addition of zinc and copper to their feed.
即使在漸呈弱勢的農業領域裡，肥料、農藥中有不少是重金屬化合物；台灣的養豬業者為促進「生產」，使豬隻快高易大，也常在飼料中添加鋅與銅……。