The pupils will constrict (or get smaller) to let less light in.
Solid i believe. hope this helps
Yes, in the first stage. Prophase I
The respiratory membrane is made of two layer that comes from alveoli and the blood vessel. Oxygen and carbon dioxide will diffuse between the layer. The rate of diffusion can be influenced by the gradient of the gas concentration, the surface area of the reaction and the distance between the vessel and alveolus.
The thin membrane will reduce the distance of the diffusion, thus increasing the diffusion rate.
A thicker membrane will impede the speed of the diffusion, makes the respiratory organ function decline. This can be observed when the lung inflammed(by infection, cancer or other cause), makes the fluid from blood vessel enter the interstitial space.
