footage of dried-up nun river with algae infestation near dehradun city outskirts, uttarakhand, india. environmental degradation.

nun river dried algae infestation dehradun city outskirts uttarakhand india environmental degradation riverbed rocks boulders dry pollution water crisis impact ecology climate change drought scarcity awareness conservation bloom problem deterioration ecological imbalance deforestation contamination habitat destruction effects urban wildlife soil erosion ecosystem marine cinematic slow motion