Unloading of mineral ions occurs at the fine veins ending through ------------------.

Explanation

To answer the question "Unloading of mineral ions occurs at the fine veins ending through ------------------," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Context**: The question pertains to the process of unloading mineral ions in plants, particularly in relation to the transport of substances through the phloem.

2. **Identify the Process**: The unloading of mineral ions typically occurs at the sink, where these ions are utilized by the plant for various metabolic processes.

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