Dissolved oxygen in water is very important for aquatic life. What process are responsible for the reduction of dissolved oxygen in water ?

Explanation

### Step-by-Step Solution:

1. **Understanding the Importance of Dissolved Oxygen**:
- Dissolved oxygen (DO) is crucial for the survival of aquatic life, including fish, invertebrates, and microorganisms. It is essential for respiration in these organisms.

2. **Identifying Processes that Reduce Dissolved Oxygen**:
- Several processes can lead to a reduction in dissolved oxygen levels in water. Here are the main ones:

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