About: http://webisa.webdatacommons.org/82368171

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	You mentioned the annual replenishment of silt to areas in Asia and north Africa, but what was not mentioned is that with today's industrialization and pollutants, much of this silt is contaminated with heavy metals, such as lead.
http://www.w3.org/ns/prov#wasQuotedFrom	culturechange.org