It enter when you breathe. You let go of Carbon in your body when you breathe out, and let fresh air or oxygen enter your body when you breathe in.
Air can enter the body by the mouth or the nose. Air then goes down the windpipe to the lungs where it can enter the bloodstream.
To oxygenise the body.
Fresh oxygen/fresh air helps the body to repair itself.
lungs
Asphyxia .
When you breathe you suck air from your mouth or nose!
Two air passages which allow air to enter the body are the cilia and aveoli !!!
to allow air to enter into enter their body
To allow the air to enter the body. The air can enter through either the nose or through the mouth.
Oxygen flows into your blood when you breath April:)
Air is sucked into the lungs through the nostrils of the nose or mouth.