0
What else can I help you with?
Why do the people of tropical regions have dark skin color while people living in temperate and polar regions have light skin color?
because they tan more, cause they can aford it.
What color was neanderthal skin or were the different by geography like us?
Studies suggest that Neanderthal skin color varied by geography, similar to modern humans. Genetic analysis indicates they likely had fair skin in regions with less sunlight and darker skin in regions with greater sun exposure. However, the exact skin color of Neanderthals is still debated among researchers.
How do animals live in desert regions?
Buy their skin and how it reacts to the hot desert
Why do different races have different skin tones?
Skin color is determined by the amount/intensity of the sunlight affecting people where they lived over a long period. Dark skin is best in places where the sun is strong (the tropics) as it prevents the sunlight damaging the skin. Light skin is best in places where the sun is weak (the temperate regions) because sunlight needs to penetrate the skin to make vitamin "D" and dark skin prevents this penetration when the sun is weak. Therefore people with dark skin need to make sure that their diet contains extra vitamin D when living in temperate regions and light skinned people need to use sunscreen and cover up on tropical regions so that they do not burn.
Why do animals in the polar region have thick fur and skin?
The animals in the polar regions have thick fur and thick skin to protect themselves from the cold climatic conditions.
What is a pacinian corpuscle?
Used in detecting pressure in fingertips, palms, soles of the feet, and other hairless skin regions.
What regions of the body are affected by Refsum's disease?
Refsum's disease affects the nervous system, eyes, bones, and skin.
What are the 2 regions of the skin?
The skin is primarily composed of two main regions: the epidermis and the dermis. The epidermis is the outermost layer, providing a protective barrier and containing cells that produce melanin. Beneath it lies the dermis, which contains connective tissue, blood vessels, hair follicles, and glands, providing structural support and nourishment to the skin. Together, these layers play crucial roles in protection, sensation, and thermoregulation.
Why do people with dark skin color have low fitness far from the equator?
People with darker skin have melanin, which provides protection from the sun's ultraviolet (UV) radiation. In regions far from the equator, where UV radiation is lower, having more melanin is less advantageous. As a result, the evolutionary pressure for maintaining high levels of melanin decreases, leading to a decrease in fitness for individuals with dark skin in those regions.
Why human being are of different colors?
The variation in human skin color is primarily due to evolutionary adaptations to different levels of sunlight exposure in different parts of the world. Melanin, a pigment in the skin, helps protect against damaging UV radiation from the sun. People with ancestors from regions with high sunlight exposure developed darker skin to provide more protection, while those from regions with less sunlight developed lighter skin to better absorb vitamin D from the sun.
How did light skin people come about?
Light skin is believed to have evolved in populations living in regions with less intense sunlight to help absorb more sunlight for vitamin D production. As humans migrated to regions with less sunlight, there was evolutionary pressure for lighter skin to support vitamin D synthesis. Over time, genetic mutations leading to lighter skin tones became more prevalent in these populations.
What are the four layers of skin?
Going from surface down, the epidermis is the outermost layer, then the dermis (including the papillary and reticular regions ) and then finally, the subcutaneous. :)
