
One of the key indicators of river health is biochemical oxygen demand (BOD), which measures the amount of oxygen needed to break down organic waste in water. Higher BOD levels generally mean higher pollution.
One of the key indicators of river health is biochemical oxygen demand (BOD), which measures the amount of oxygen needed to break down organic waste in water. Higher BOD levels generally mean higher pollution.

This article was originally published by an external source. Read the full story at the source.
Read Full Article at Source ↗