A healthy adult human excretes (on an average) ___gm of urea/day.

Answer

To solve the question regarding the average amount of urea excreted by a healthy adult human per day, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the average amount of urea excreted by a healthy adult human in grams per day.

2. **Identify Key Information**: Urea is a nitrogenous waste product that is produced in the liver from the breakdown of amino acids. It is then excreted by the kidneys.

3. **Recall the Average Excretion Rate**: Based on biological studies and data, a healthy adult human typically excretes about 25 to 30 grams of urea each day.

4. **Conclude the Answer**: Therefore, the average amount of urea excreted by a healthy adult human per day is approximately 25 to 30 grams.

### Final Answer:
A healthy adult human excretes (on average) **25 to 30 grams** of urea per day.

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