Question

skin of birds and mammals
long answer I want ​

Answer 1

1. Birds have a thin and delicate epidermis, or skin, compared to other vertebrates. Their skin produces specialized structures called feathers, which is one of the unique characteristics of birds. Feathers are made up of keratin, a flexible protein that also forms the hair and fingernails of mammals.
2. . The skin of mammals is constructed of two layers, a superficial nonvascular epidermis and an inner layer, the dermis, or corium.

Answer 2

Answer:

Use Euclid's division lemma to find the HCF of a and b. Hence 15kg = 15000g. Otherwise set p = q and q =r and repeat the process. 15000=210×71+90 Here r = 90.