You inhale oxygen, and you exhale carbon dioxide.
take place when you inhale and exhale?
take place when you inhale and exhale?
take place when you inhale and exhale?
take place when you inhale and exhale?
take place when you inhale and exhale?
carbon doxide
This gas is nitrogen.
Carbon Dioxide is important to exhale.
Carbon dioxide
Carbon-Dioxide
Carbon Dioxide.
Carbon Dioxide