Three layers. The epidermis is the top layer of skin. This layer is for making new skin cells, provides a waterproof barrier, gives skin its color and is your protective layer. The dermis which is responsible for supply blood to your skin, hair growth, and the production of sebum (oil) and sweat. Lastly, the hypodermis which is basically made of connective tissue and fat and good for regulating your body temperature (1, 2, 3).
<span>If you are a chicken breeder who is interested in developing new hybrids that have many of the genes from the original ancestor birds, you should breed your birds with other birds that have similar genes to the original ancestor birds. In this way, you can combine the ancestor birds genes with those of your own birds to create a new hybrid.</span>
It is subduction i pretty sure beacuse i learned that