Re: Where? Mars? I don't think so.
Do you see any life in this picture? I don't. No plants, no bugs, no water. Nothing. And what would subsurface organisms consume? No light penetrates, and no organic matter exists on the surface that could be mixed in. There is no surface erosion that would mix the soil. There is no wind that could carry spores. Mars' surface is bathed in ultraviolet light, the soil is poisoned with hydrogen peroxide. Just look at the picture man.
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