Eyes of nocturnal birds have large cornea and large pupil. How does it help them?

Eyes of the nocturnal birds have large cornea and a large pupil. How does this structure help them?

Ciliary muscles of human eye can contract or relax. How does it help in the normal functioning of the eye ?

Large cells have

Why do camels have large flat feet ?

Lungs have a large number of alveoli for

The trees have in them a large amount of