Why is the pharynx considered to be part of the digestive system and the respiratory system?

Explanation:

It's commonly referred to as the throat. The digestive system serves for swallowing. And the respiratory system is you know.. when u breathe.

light rays enter the eye through the cornea, the clear front first understand how the eye enables us to see, and what role the cornea plays in eye at different angles, and do not focus on one point the retina, but on many we can tolerate very large scars on our bodies with no concern except for our vanity.

the answer would be  

c. neighborhood watch

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