Examlex
A black hole can be produced if the stellar core left over after a supernova is larger than 3 M .
Pupil
The opening in the center of the iris of the eye that allows light to enter the retina.
Iris
The colored part of the eye that controls the size of the pupil and the amount of light that enters the eye.
Muscles
Tissues in the body that have the ability to contract, enabling movement of the body and maintenance of posture.
Complexity
A characteristic of systems, models, or problems that have multiple interconnected parts and variables, which make understanding or solving them challenging.
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