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OVERVIEW. In The Biology of Skin Color, Penn State University anthropologist Dr. Nina Jablonski walks us through the evidence that the different shades of human skin color are evolutionary adaptations to the varying intensity of ultraviolet (UV) radiation in different parts of the world.
Based on this new information, revise your hypothesis to explain the selective pressure on the evolution of human skin color. The greater amount of eumelanin in darker skin protects folate from being broken down by UV radiation and thus increases fitness among populations in high-intensity UV areas. 17.
6 gru 2023 · Explain how objects in our surroundings produce different colors through selective reflection or absorption of parts of the visible spectrum.
The manner in which visible light interacts with an object is dependent upon the frequency of the light and the nature of the atoms of the object. In this section of Lesson 2 we will discuss how and why light of certain frequencies can be selectively absorbed, reflected or transmitted.
21 lis 2023 · In this lesson we learned that color is specific wavelengths of light reflecting off of objects, or matter, that humans can see. The sun's light is white light, meaning it contains all the...
describe how the selective absorption of frequencies of light affects the observed color of an object, describe how the selective reflection of frequencies of light affects the observed color of an object, rank the wavelengths of light waves that correspond to different colors of light.
Light reflection occurs when a ray of light bounces off a surface and changes direction. From a detailed definition of ‘reflection of light’ to the different types of reflection and example images, our introductory article tells you everything you need to know about the reflection of light.
