Why is the river Mississippi known as the dead sea?

The Mississippi River is often referred to as the "Dead Sea" due to its high levels of pollution and nutrient runoff, which result in low oxygen levels and dead zones where aquatic life struggles to survive. This degradation affects the river's ecosystem, leading to decreased biodiversity and the death of fish and other organisms. Additionally, the river's sedimentation and industrial runoff contribute to its environmental challenges, further solidifying its grim nickname.