How is the amount of urine produced regulated?

Explanation

**Step-by-Step Solution:**

1. **Understanding Urine Production**: The amount of urine produced by the body is primarily influenced by the levels of water and salt concentrations in the body.

2. **Effect of Water Levels**:
- When there is an excess of water in the body, the kidneys filter out this excess, leading to a higher volume of urine production. This urine is typically dilute because it contains a higher proportion of water compared to solutes.
- Conversely, when there is a deficiency of water in the body, the kidneys conserve water, resulting in the production of less urine. This urine is more concentrated, containing a higher concentration of salts and wastes.

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