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What are melanocytes?
Melanocytes are epithelial cells of the skin particular in secretion of melanin. Melanin is a pigment that besides coloring the skin, the iris of the eye and the hair, also works as a filter against the ultraviolet radiation of the sun therefore protecting the body against the harmful effects of this radiation (mostly burns and carcinogenic mutations).
Effects on Materials - Air pollutants Most air pollutants are reactive chemicals, so they react with most of the substances around. You may recall from your chemistry lessons
Q. Why some trees lose their green color in the autumn? In autumn nights longer and days become shorter thus there is a reduction of the photosynthesis rate and some plants pre
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How are the heterotrophic beings divided in the ecological study of food interactions? The Heterotrophs are divided into consumers and decomposers. An ecosystem can survive wit
Explain the Virtual Dissection of the Rat in multimedia tutorials? This animation will teach you about basic mammalian anatomy. The major organ systems in a rat are very simila
drawandlabelthemajorendocrineglandsinthehumanbody
On living organism Air pollution causes following effects on living organism: (a) Effects on humans: 1. Carbon monoxide reduces the oxygen carrying cap
skeletal system of fish .exoskeleton and endoskeleton
what are the organs of respiration in lower forms of animals?
Q. What are some signs and symptoms found in patients with hypothyroidism? In hypothyroidism the production and secretion of T3 and T4 are impaired. Since these thyroid hormone
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