Comprehension
The respiratory system is
our body's breathing system. It includes the lungs and airways, which are like
a set of tubes. When we breathe in, air goes into our lungs, and when we
breathe out, air comes out. The lungs are like sponges that take in the oxygen
from the air we breathe. Oxygen is like the fuel our body needs to work
properly. At the same time, the lungs help get rid of a waste gas called carbon
dioxide when we breathe out. So, it's like a simple but essential
process—breathing in to get oxygen and breathing out to remove waste. The
respiratory system is like our body's way of taking in the good stuff and
getting rid of the stuff we don't need.
The respiratory system is our body's breathing system.
When we breathe in, air goes into our lungs, and when we breathe out, air comes out.
Oxygen is like the fuel our body needs to work properly.
