What is the composition of sweat produced by sweat glands?

Explanation

### Step-by-Step Solution:

1. **Understanding Sweat Production**: Sweat is produced by sweat glands, which are present in the skin. These glands play a crucial role in thermoregulation and waste elimination.

2. **Composition of Sweat**: The primary components of sweat include:
- **Water**: Sweat is primarily composed of water, which makes up the majority of its volume.
- **Sodium Chloride (NaCl)**: This is the main salt found in sweat, contributing to its salty taste.
- **Urea**: A small amount of urea is present in sweat, which is a waste product from protein metabolism.
...