Excretion of uric acid requires `"_____________"` loss of water

Explanation

**Step-by-Step Solution:**

1. **Understanding Excretory Products**: Excretory products vary among organisms based on their habitat and physiology. The three main types of nitrogenous waste are ammonia, urea, and uric acid.

2. **Ammonia**: Ammonia is the most toxic form of nitrogenous waste and is primarily excreted by aquatic organisms such as fish. It is highly soluble in water, which allows these organisms to excrete it directly into their aquatic environment without significant water loss.

3. **Urea**: Urea is less toxic than ammonia and requires some water for its excretion. It is produced by terrestrial organisms, including mammals, as a way to conserve water while still effectively eliminating nitrogenous waste.

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