environment: the conditions of one's surroundings
topography: a detailed, precise description of a place or region
ecosystem: a ecological community together with its environment, functioning as a unit
flow: to move with a continual shifting of the component parts
support: to keep from weakening; to strengthen
responsibilities: something for which one has a duty or a obligation
circulate: to move around, as from place to place
weather: the state of the atmosphere at a given time in a given place with regard to temperature, precipitation and wind
climate: the temperature, precipitation and wind conditions that characteristically prevail in a certain location or region