Fingernails and hair are dead skin cells that have undergone Keratinization. Keratin that has solidified essentially. Keratin is made up of a family of proteins.
Organic
organic
they are organic
organic
Do you mean how is an organic compound different from an inorganic compound? If so, an organic compound has carbon, an inorganic compound does not need to have carbon.
NH4 is not a compound. It is an organic part of a compound which could be organic or inorganic.
Energy is NOT a compound.
Organic compound
Ammonia contains n and h. So ammonia is a inorganic compound.
inorganic
Inorganic
Inorganic
inorganic
there are organic acids and inorganic acids