The critical environmental problem from dams is due to impacts from

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Dams and reservoir creation can cause significant disturbance to ecosystems, including alterations in water flow, sedimentation, and changes in water temperature and chemistry that can affect aquatic life. The construction of dams can also result in habitat loss, fragmentation, and displacement of plants and animals. While the operation of dams may have impacts on air quality, the critical environmental problem from dams is largely associated with their construction and associated ecosystem disruption.

The Critical Environmental Problem from Dams Is Due to Impacts