b) Humidity This is a crucial point to observe. Between 7000 and 17000 pores are involved in the gas exchange, and natural variation can be observed : young hens will give eggs with less pores than old ones for instance. The mechanism is showed in this slide.
b) Humidity This is a crucial point to observe. Between 7000 and 17000 pores are involved in the gas exchange, and natural variation can be observed : young hens will give eggs with less pores than old ones for instance. The mechanism is showed in this slide.