A good piece in 'The Guardian' on the importance of soil: something which I would imagine would be an important part of the final specification.
Soil is of vital importance.
Soil is the top layer of the Earth’s crust and is composed of a mixture of water, gases, minerals and organic matter. It is where 95% of the planet’s food is grown yet it has historically been left out of wider debates about nature protections because we know so little about it. One teaspoon of healthy soil can contain up to a billion bacteria and more than 1km of fungi.
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