Question

where would you expect to find the highest amount of dissolved materials, pollution, and nutrients along a rivers run? the same all along the river at the beginning at the mouth, near the ocean in the middle

Explanation:

Step1: Consider river flow process

As a river flows, it picks up dissolved materials, pollution, and nutrients from various sources like soil erosion, industrial waste, agricultural runoff.

Step2: Analyze material accumulation

These substances accumulate over the length of the river. At the mouth (near the ocean), the river has traveled the longest distance, so it has had more time to collect and carry these substances.

Answer:

at the mouth, near the ocean