When a single cell organism splits in too
The given blank can be filled with gas exchange.
In the mentioned diagram, the magnified structure shown is of alveoli. Alveoli are an essential component of the respiratory system that functions to exchange the molecules of carbon dioxide and oxygen to and from the bloodstream. These are the tiny-balloon configured air sacs situated at the very terminal of the respiratory tree and are aligned in groups all through the lungs.
Biotic means that it came from or has been produced/has been in relation with an organism. So your answer would be THE BACTERIA THAT LIVES IN THE INTESTINE OF A RABBT, it was the interaction of 2 things within them selves.
The penis is the genital organ
