Skin layer is made impervious to water by which among the following?

Options :
  1. Collagen
  2. Melanin
  3. Keratin
  4. Chitin
Answer and Explanation :-

Answer: Option 3

Explanation:

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Speciesism is morally objectionable because, like racism, sexism, and heterosexism, it links personhood with an irrelevant criterion. Those who reject speciesism are committed to rejecting racism, sexism, heterosexism, and other forms of discrimination as well.
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