About: http://webisa.webdatacommons.org/336866622

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	Carbon is an example of chemical filtration, the nitrogen cycle is an example of biological filtration, and the sponge is an example of mechanical filtration.
http://www.w3.org/ns/prov#wasQuotedFrom	tropicalfishkeeping.com