Oxygen and carbon dioxide.........I think.
Butterflies do indeed take part in the exchange of gasses. They need oxygen to breathe just like most living animals.
cutaneous
alveoli.
Gas exchange takes place by book lungs .
Lenticel
exchange of nutrients and gasses with tissues
exchange of nutrients and gasses with tissues
They don't physically breathe in & out - like animals an people. They have no diaphragm to pull air into their lungs. The spiders lungs are simple 'book lungs' which simply exchange gasses.
generally in the lungs and the alveli
generally in the lungs and the alveli
how does the exchange of gasses between the aveoli and blood happen
alveoli?