define all the followings I. cornea ii. iris iii. crystallisation ( if I ans this question I Will mark u as brainliest ☺️☺️
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cornea
Listen to pronunciation. (KOR-nee-uh) The transparent part of the eye that covers the iris and the pupil and allows light to enter the inside.
iris
The colored tissue at the front of the eye that contains the pupil in the center. The iris helps control the size of the pupil to let more or less light into the eye.
crystallisation
Crystallization or crystallisation is the process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal. Some of the ways by which crystals form are precipitating from a solution, freezing, or more rarely deposition directly from a gas.
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