About: http://webisa.webdatacommons.org/402499508

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	In most cases, HABs are caused by excess nutrients, especially phosphorus, which comes from a variety of sources including point sources???cities and industries???and nonpoint runoff from urban and rural lands.
http://www.w3.org/ns/prov#wasQuotedFrom	issuu.com