Final answer:
River fires, algae blooms, and the death of fish and eagles are linked to water pollution resulting from contaminants like oil spills, which disrupt the aquatic ecosystem and wildlife.
Step-by-step explanation:
The environmental issues related to river fires, algae blooms, and the death of fish and eagles are associated with water pollution. These occurrences are indicative of contaminants in water bodies that significantly disrupt the aquatic ecosystem, leading to detrimental effects on wildlife and the quality of water. Pollution in water can come from various sources, such as oil spills, which introduce harmful substances into rivers and streams, affecting the local freshwater supplies and causing widespread damage to the environment, including the flora and fauna that depend on these water bodies for survival.