Assertion: reptile's scale | /r/MadeOf | keratin
Facets:
Source sentences:
text: The scales of all snakes (and many lizard species) are made of keratin, which is the same substance that makes up the hair and fingernails of humans.
text: Scales are made from keratin which is the same substance as human fingernails.
text: The scales of all snakes and lizards are made of keratin, the same substance that's in the hair and fingernails of people.
text: Reptiles have a dry skin that is covered with scales or scutes made of keratin.
text: These scales are made of keratin, which is the same material found in human fingernails.
text: In order to be considered a reptile, an animal must have a body covered in scales made of keratin, fertilize internally but produce eggs, be cold-blooded, use thoracic breathing, and eliminate waste via uric acid.
text: The scales are made of keratin; the same material out of which our fingernails are made.
text: The scales of all snakes (and many lizard species) are made of keratin, which is the same substance that makes up the hair and fingernails of humans.
text: The scales of all snakes (and many lizard species) are made of keratin, which is the same substance that makes up the hair and fingernails of humans.15.
text: Scales are made from keratin which is the same substance as human fingernails.