ANATOMY

Detailed explanation-1: -The volume of air inspired or expired during normal respiration is defined as the tidal volume. The average tidal volume of a healthy human being is 500mL/min. Thus, the amount of carbon-di-oxide given out is 500mL/min.

Detailed explanation-2: -When you inhale (breathe in), air enters your lungs, and oxygen from that air moves to your blood. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathed out). This process, called gas exchange, is essential to life.

Detailed explanation-3: -At each cell in your body, oxygen is exchanged for a waste gas called carbon dioxide. Your bloodstream then carries this waste gas back to the lungs where it is removed from the bloodstream and then exhaled. Your lungs and respiratory system automatically perform this vital process, called gas exchange.

Detailed explanation-4: -In one day, the average person breathes out around 500 litres of the greenhouse gas CO2 – which amounts to around 1kg in mass.