There are a number of heavy metals in the soil in every backyard in the world. Have you tested your soil for pollutants before you grow vegetables ?
Asbestos.
Benzene.
Cadmium.
Dioxin and dioxin-like substances.
Fluoride.
Lead.
Mercury.
Highly hazardous pesticides.
Can all be found in your backyard
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From @thehomesteadlife
In #homesteading