They are an advantage for the frog because frogs have poorly developed eyelids that don't close all the way when their eyes are pushed out of their skull. Therefore, during resting periods, they can protect their eyes by pulling them into their sockets. ( http://www.microscopyu.com/galleries/confocal/frogeye40x.html)
The eye sockets of the head
The eye sockets of the head
The frog's eye has a nictitating membrane that covers the eye and allows the frog to see underwater with ease.
linen
Dried Grapes were used to plug the sockets.
Dried Grapes were used to plug the sockets.
it surrounds you eye muscles
Linen
cotton
no
Because they do.
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