Use the Figure Above to Answer the Following Question(s)

question 4

Short Answer

Use the Figure above to answer the following question(s).
-What are the two peak years for immigration into the United States?

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Definitions:

Melanin

A pigment produced by melanocytes within the skin, responsible for skin, eye, and hair color, and provides protection against UV radiation.

Collagen Synthesis

The biological process by which cells produce collagen, a vital protein that gives structure and strength to skin, bones, and connective tissues.

Reticular Layer

The deeper layer of the dermis in the skin, comprised mainly of dense irregular connective tissue, which provides strength and elasticity.

Dermatitis

An inflammation of the skin that leads to itchiness, redness, and sometimes swelling, which can be caused by allergies, irritants, or genetic factors.