Although more people die of influenza each year, they are largely the elderly and infirm, while measles is more likely to kill infants. Does this affect the popular will (i. e. society’s will) to control the two diseases?

...~ Activity theory predicts that older people will do different activities than younger people, with more time budgeted for leisure. The relationship between age and time spent doing these leisure activities with others, under activity theory, is hypothesized to be positive. ~...

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keratin.

collagen.

elastin.

Explanation:

Elastin and collagen are found in the dermis and are produced by fibroblasts, are responsible for giving firmness, strength and elasticity to the skin.

Keratin is in the epidermis, this protein helps to preserve or recover the elasticity and firmness of the skin, also helps in cell regeneration and support the tissue where it accumulates.