An empirical assessment of value-chain analysis and competitive water quality assessment in ikot akpa nkuk community in ukanafun local government area of akwa ibom state, Nigeria Journal title: Journal of Biodiversity and Environmental Sciences (JBES) Authors: M.A. Abua*, A.I. Afangideh, B.A. Ayiri, A.J. Akiang Subject(s): Biological Sciences, Environmental Sciences, Biology