What social need is fulfilled by the establishment of an urban garden. Use the market failure approache (externalities, public goods, imperfect information, etc) to justify.

Details:

your local organic supermarket is struggling to manage its compost production. They cannot keep the compost for a long time and the companies specialized in the treatment of the compost have too high costs. The idea of creating an urban garden on the roof of the store was born to solve this problem. Using the market failure approach, demonstrate which social needs will be solved by adopting this solution and which market failures (externalities, public goods, information asymmetry, transaction costs, etc.) would be corrected to make the market more efficient .