If a person drinks very less water during the day, the quantity of urine passed by him decreases. Which important body waste will not be flushed out properly under these condition?

Answer

**Step-by-Step Solution:**

1. **Understanding the Role of Water in the Body:**
- Water is essential for various bodily functions, including the production of urine. When a person drinks less water, the body has less fluid to work with.

2. **Urine Formation:**
- Urine is formed in the kidneys through a process called filtration. The kidneys filter waste products from the blood, and these waste products are then excreted as urine.

3. **Impact of Dehydration on Urine Production:**
- If a person does not consume enough water, the kidneys will produce less urine. This is because the body tries to conserve water to maintain hydration levels.

4. **Waste Products in Urine:**
- One of the main types of waste products that the kidneys filter out of the blood is nitrogenous waste. This includes substances like urea, which is produced from the breakdown of proteins.

5. **Consequences of Reduced Urine Output:**
- When there is less urine produced due to low water intake, the nitrogenous waste, primarily urea, will not be flushed out properly from the body.

6. **Conclusion:**
- Therefore, the important body waste that will not be flushed out properly when a person drinks very little water is nitrogenous waste, specifically urea.

**Final Answer:**
The important body waste that will not be flushed out properly is **urea**, which is a nitrogenous waste.

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