af Nathan Junyk 14 år siden
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Mere som dette
Maintenance
Transportation
Building
Changed climate
Less rain
River depletion
Ecosystem destruction
Steady drain
More tax/tarrif money
Stronger economy
Better relations
Fertilizer
Tap water
Evapouration
Dumping
Land use
Construction
Maximum draw
Economic effects
Environmental effects
Pollution
Farming
Pollution levels
Cleaning
Industry
Spills