What is meant by the following terms ?
Shearing

Explanation

### Step-by-Step Text Solution:

1. **Definition of Shearing**: Shearing is the process of removing wool from the body of sheep. It is the first step in the wool extraction process.

2. **Process Description**: During shearing, the wool is cut off from the sheep's body. This is done using a special tool, such as a razor or a trimmer.

3. **Additional Layer Removal**: Along with the wool, a thin layer of the sheep's skin, known as the upper dead layer, is also removed. This layer is not useful and is shed naturally by the sheep.

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