Breathing & gas exchange

For breathing
this is a very general term and every living things will hv breathing


For gas exchange
this means in the air sac / alveoli
the oxygen enter the blood while the carbon dioxide comes out from the blood and then is being breathe / exhaled out of the human body

唔知你睇唔睇得明中文= =

breathing好似係一個動作
that can bring the oxygen into lungs
and carry out carbon dioxide from our body

gas exchange我諗係指你lung入面既氣體交換(換氣)
=吸入氧氣 and呼出carbon dioxide
and provide oxygen to the body and carry out respiration(呼吸作用)

p.s..其實最易混淆係 呼吸作用同呼吸 = respiration and breathing....