id	keyword
ejge-9788	tourism
ejge-9788	emissions
ejge-9788	growth
ejge-9788	countries
ejge-9788	carbon
ejge-9788	dioxide
ejge-9788	energy
ejge-9788	dioxide emissions
ejge-9788	ssa
ejge-9788	carbon dioxide
ejge-9788	environmental
ejge-9788	study
ejge-9788	africa
ejge-9788	et al
ejge-9788	co2
ejge-9788	revenue
ejge-9788	consumption
ejge-9788	pollution