Explain how these substances can lead to tooth and gum problems. Name the two main skin layers and summarize what each layer does.

Describe effective methods for keeping skin and hair healthy.

The two main skin layers are :-

EPIDERMIS

It is the outermost layer of the skin and provides a waterproof barrier and creates our skin tone.

DERMIS

This is right below the epidermis and the function of it is to protect and support the skin including deeper layers.

To have a healthy skin:

To have a healthy hair:

( in the first question what does these refer to? i will tell you the answer in the comments if you tell me what it means )

b and c would be the answers