The middle layer (2nd layer) of skin is the a)fatty
b)insulator
c)dermis
d)epidermis

c) dermis

Explanation:

The dermis the middle layer of the skin. It contains Blood vessels and Lymph vessels.

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its first and third is your answer i did the qustion the fourth isnt right

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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