activities   -   actors   -   community places   -   events   -   ideas   -   imaginary landscape   -   physical landscape   -   physical processes
http://www.ics.forth.gr/isl/CRMsci/S15_Observable_Entity
http://www.ics.forth.gr/isl/CRMsci/S15_Observable_Entity

Instances (13)

calm
erosion
frost
geochemical change
precipitation
sea surface temperature
slope stability
snow
soil accumulation
storminess
temperature
volcanic activity
wind