A Riddle... Pruebala mi adivinanza?

You cannot live without me.
You cannot touch me.
You can see only my reflection.

What am I?

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No puedes vivir sin esto.
No puedes tocarlo...
Solo puedes ver el reflejo de esto.

Que es esto?

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I post my original poetry, love letters, articles, paintings, photographs,
and whatever else I feel like on steemit @em-blem