0	0.26534	flood water model data temperature area asian using 
1	0.10447	area species oil petroleum nigeria total environmental asian 
2	0.09355	rock asian rocks surface data area earth coal 
3	0.30513	environmental waste land table asian population use pollution 
4	0.09283	soil soils asian value strength engineering cement properties 
5	0.17869	area land water groundwater aquifer irrigation vulnerability areas 
6	0.09305	view concrete rubber en&q https://scholar.google.com/scholar?hl materials energy scholar 
7	0.08763	water river groundwater mg/l surface quality environmental concentration