A mammal ventilates its lungs by moving its ............... and .............

Explanation

To answer the question "A mammal ventilates its lungs by moving its ............... and .............", we can break down the solution into the following steps:

### Step-by-Step Solution:

1. **Understanding the Respiratory System**:
- The lungs are crucial for respiration in mammals, facilitating the exchange of gases (oxygen and carbon dioxide) necessary for cellular functions.

2. **Identifying the Process of Ventilation**:
...