Cirrus fibratus vertebratus are NOT clouds.
Cirrus fibratus vertebratus are generated by planes spraying chemicals in the atmosphere (chemtrails).
The name cirrus fibratus vertebratus was invented some years ago by the World Meteorological Organization to deceive you and make you believe that chemical spraying doesn't exist.
You can see cirrus fibratus vertebratus in the sky ONLY during or after spraying.

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