1
Nitrogen and phosphorus in agricultural runoff stimulates algae growth in the Gulf.
2
Scientists say warmer-than-normal weather and agricultural runoff may have contributed to this year's algae bloom.
3
They enter watersheds through waste and agricultural runoff, and eventually end up in our drinking supplies.
4
The big issue is water quality - the impact of urban wastewater and agricultural runoff on waterways.
5
It is under threat from silt from land clearance and pollution from sewage, industrial waste and agricultural runoff.
6
One module, "Beyond the Dead Zone" examined the threat posed by agricultural runoff to the Everglades and nearby coral reefs.
7
The big issue is water quality -the impact of urban wastewater and agricultural runoff on waterways -but there are quantity issues too.
8
Agricultural runoff and warming temperatures are causing oxygen levels to drop, leaving once-rich coastal areas lifeless.