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How did the environment shape the history of the Americas?
Opponent-Process Pairs
A theory suggesting that the human visual system interprets colors in an antagonistic way, through pairs of colors opposite each other on the color spectrum.
Young-Helmholtz Theory
A theory of color vision proposing that the human eye perceives color because it has three types of receptors, each sensitive to red, green, or blue light.
Primary Color Experiences
Sensations associated with viewing primary colors (red, blue, yellow), which form the basis for the perception of all other colors through their combination.
Color-Blind Eye
A condition whereby an individual has difficulty distinguishing between certain colors, typically red and green.
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Q38: Humans began migrating to the Americas during