One word.............yes.
Keratin forms hair , skin , nails in human body . It also forms horn , hooves in cattle , all these structures are part of exoskeleton .
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Well animals nails will be on an animal but human nails are on humans but i thing that animal nails are stronger and contain more ivy
It is a good example of an exoskeleton.
a skeletal system
The exoskeleton (carapace) is made mainly of chitin, also a component of our hair and nails!
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Carpentry nails or human nails? You'll have to be more specific in your question.
Jellyfish would be an example.
Yes. For example, Ants.
yes
she has long nails because she likes long nails on her