🌊🌿🟢📈→O₂📉→🐟💀

#algal bloom #phytoplankton bloom #hypoxia #anoxia #oxygen depletion #dead zone #eutrophic lake #water quality decline

🚜🌾➡️💧📉

#agricultural runoff #farm waste #fertilizer runoff #pesticide runoff #water quality decline #nonpoint source pollution