In insects, inspiration is called a passive process while expiration is called active process . Why ?

Explanation

### Step-by-Step Solution:

1. **Understanding the Respiratory System of Insects**:
- Insects possess a unique respiratory system known as the tracheal system. This system consists of a network of tubes called tracheae that transport air directly to the tissues and cells of the insect's body.

2. **Defining Inspiration and Expiration**:
- Inspiration refers to the process of taking in air (oxygen) into the body, while expiration refers to the process of expelling air (carbon dioxide) from the body.

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