Based the case study about Nestles's efforts to make kit kat more environmentally friendly through packaging changes, illustrates and analyse kit kat's value chain diagram in the context of sustainability and environment in terms of $1.$ support activities, $2.$primary activities, $3.$firm infrastructure, $4$ human resource management, $5.$technology development,$6.$ procurement,$7.$ inbound logistics$,8.$ operations, $9.$outbound logistics$,10.$ marketing & sales, $11.$service, $12$ margin. $,$