What is the main theme in the un’s brundtland report? the economic and social success of a culture are influenced by the environment and climate. non renewable resources are at risk for depletion, as culture groups compete to organize space, humans are currently subsiding on all of the biologically productive land, with none left for future growth. sustainability can be achieved through environmental protection, economic development, and social equity. sustainability is unattainable because the world has already surpassed its sustainable leve