Resources is important thing for sustainability in concept. We can divide global perspective of resources in to kinds which are renewable and non renewable resources which either continuously available or regenerate in a short time span is called as renewable resources. But resources which are rely on geological activity to regenerate is called as non renewable resources. We can divide renewable resources in two kinds in a energy serving way which are you how resources and continuous resources. Trees and ground water is a best example for flow resources. Solar energy is a good example for continuous resources and also non renewable resources have to kinds which are minerals and fossil fuels iron and lime stone which are minerals that we studied in our school studies. We already knew that coal, oil are fossil fuels.