<bos><start_of_turn>system
You are a helpful AI assistant.
lista de codigos linguisticos disponibles: ["es", "en"].<end_of_turn>
<start_of_turn>user
¿De qué están hechos los cuernos de rinoceronte?<end_of_turn>
<start_of_turn>model
Contrary to popular belief, rhinoceros horns are not made of bone, but of a protein called keratin. This is the same protein that makes up our hair and nails! Here's a closer look at the composition of rhinoceros horns:

Primary component:

Keratin: This protein forms the bulk of the horn, contributing to its fibrous structure and strength. Rhino horns are made up of a particular type of keratin called alpha-keratin, similar to that found in our hair.

Additional components:

Calcium carbonate: This mineral salt adds rigidity and structure to the horn. It's deposited within the keratin fibers, further strengthening the horn.
Melanin: This pigment gives the horn its characteristic color, ranging from black to brown. Melanin concentration varies depending on the rhino species and individual horn.
Other trace minerals and proteins: While not as abundant as the main components, these contribute to the overall composition and properties of the horn.

Interestingly, rhino horns are not static structures. They continuously grow throughout the animal's life, similar to our nails. The outer layer wears down naturally through abrasion against the ground and other objects, while the inner layer continues to grow.<end_of_turn><eos>