OV has a terrarium in a bottle, this can be found on the windowsill in Center of Excellence. The terrarium is sealed, with the intention of making it a closed cycle of water that can hopefully survive the potential lack of love from future board members. It is not quite a biosphere, but more or less spheroid in shape.
Composition
From bottom:
Water Reservoir & Coal Filter
A mix of gravel and activated charcoal. Stores water and filters out pollutants.
Peat Moss
A layer of semi-alive moss. Serves as living biomass and nutrient source
Soil
A mixtureoforganic matter,minerals,gases,liquids, andorganismsthat together supportlife.[1]
Living Stuff
Various plants have been introduced to the terrarium. Since soil and samples from various sources including outside have been introduced, it is assumed that a variety of microorganism live in the Biospheroid.