Why Do Humans Need Oxygen to Live?
Imagine a small, curious girl named Zara and her talking pet bird, Orbit, sitting in her treehouse. One day, Zara asked Orbit, “Why do humans need oxygen to live?” Orbit, being a clever bird, decided to explain it in a way that Zara would never forget.
The Magical Gas in the Air
Orbit flapped his wings and said, “Oxygen is a gas that’s all around us in the air. It’s invisible, but every time you breathe in, your body takes it in. Oxygen is like the magic ingredient that keeps you alive!”
Zara tilted her head, intrigued. “But what does oxygen do inside us?”
Meet the Lung Express
Orbit explained, “Think of your lungs as a train station called ‘The Lung Express.’ When you breathe in, the oxygen hops onto tiny red blood cells like passengers boarding a train. These red bloo...
