The earth of black color is made by humus. Because such soils are the most fertile. Humus is the products of the life of worms. Worms dung eat all sorts of waste. I feed them the same as I eat them myself.
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From @le0nid
The earth of black color is made by humus. Because such soils are the most fertile. Humus is the products of the life of worms. Worms dung eat all sorts of waste. I feed them the same as I eat them myself.