BOD of waste water is estimated by measuring the amount of

Explanation

To estimate the Biochemical Oxygen Demand (BOD) of wastewater, we need to follow these steps:

### Step-by-Step Solution:

1. **Understanding BOD**:
- BOD stands for Biochemical Oxygen Demand. It is a measure of the amount of oxygen that microorganisms will consume while decomposing organic matter in water.

2. **Oxygen Consumption**:
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