On a week end, Shubham went on a picnic with this his parents. There was a beautiful view of a lake but suddenly, Shubham saw some fish floating on the surface of water of the lake as they had died. Shubham asked his parents why these fish had died. They told him that fish also need oxygen for their survival as we do. Dissolved oxygen in the water gets depleted due to discharge of human sewage and organic wastes of the industries into the lake water.
After reading the above paragraph, answer the following questions:
(b) Hoe dissolved oxygen gets depleted due to presence of the organic waste?

Explanation

To answer the question of how dissolved oxygen gets depleted due to the presence of organic waste, we can break down the explanation into several steps:

### Step-by-Step Solution:

1. **Understanding Dissolved Oxygen**:
- Dissolved oxygen (DO) is the oxygen that is present in water and is essential for the survival of aquatic life, including fish.

2. **Introduction of Organic Waste**:
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