What is uricotelism? In what way is it advantageous to the land animals which layed shelled eggs?

Explanation

### Step-by-Step Solution:

1. **Definition of Uricotelism**:
- Uricotelism is the biological process through which certain animals excrete nitrogenous waste primarily in the form of uric acid. This process is characteristic of uricotelic animals.

2. **Characteristics of Uric Acid**:
- Uric acid is a non-toxic substance, which means it does not harm the organism or its environment. This is a significant advantage for animals that need to conserve water.

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