a contrast between two rivers one polluted with no aquatic life vs

pollution industrialization toxins chemicals runoff contamination waste dumping ecosystem disruption aquatic life dead river degraded water quality untreated sewage unsanitary conditions health risks biodiversity loss invasive species declining fish populations algal blooms hypoxia anoxic zones eutrophication kill offs waterborne diseases decaying vegetation murky waters limited visibility stagnant aesthetic displeasure public concerns unsafe drinking sources struggling communities economic impact restoration efforts clean clear thriving abundance recreational opportunities preservation