Drag each item to indicate whether it is a positive or negative impact of dams. (2 points)
Positive
Negative
control of water
:: water storage
trapping of river-borne nutrients
high salt concentrations
energy production
:: deepening of riverbed
Positive
- control of water
- water storage
- energy production
Negative
- trapping of river-borne nutrients
- high salt concentrations
- deepening of riverbed