What is the significance of ureotelism over ammonotelism?

Explanation

**Step-by-Step Solution:**

1. **Understanding Ammonotelism**: Ammonotelism is the process by which organisms excrete ammonia as their primary nitrogenous waste. This method is common in aquatic animals, such as bony fishes and some amphibians, which can afford to lose large amounts of water.

2. **Understanding Ureotelism**: Ureotelism, on the other hand, involves the conversion of ammonia into urea, which is then excreted. This process is typical of mammals, including humans, and some amphibians that are adapted to terrestrial life.

3. **Toxicity Levels**: Ammonia is highly toxic to organisms, requiring a significant amount of water to dilute and excrete it safely. In contrast, urea is much less toxic, allowing organisms to conserve water while still effectively removing nitrogenous waste.

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