| http://www.w3.org/ns/prov#value | - on projects, biosolids ??? as well as increasing soil fertility and boosting plant growth ??? can lock up carbon,??? Prof. Bolan says.???Biosolids contain nitrogen and other nutrients for crop growth, organic matter to improve soil structure, and non-degradable forms of carbon that will stay in the soil for a long time.???Currently Australia stockpiles about 70,000 tonnes of biosolids a year from
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