The integumentary system is the skin. Skin protects the inner organs from Bactria. Essentially the skin is a wall protecting against the outside world. It doesn't really release anything but is just there for protection.
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the shadows are called umbra and penumbra
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Megaloblastic anemia is most often due to hypovitaminosis, specifically vitamin B12 (cobalamin) and folate deficiencies, which are necessary for the synthesis of DNA. [3] Copper deficiency and adverse drug reactions (due to drug interference with DNA synthesis) are other well-known causes of megaloblastic anemia.
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Answer: radiation i think
Polar cell: - occur 60 and 90-degrees from the equator, near the north and south poles. - associated with high pressure zones and low precipitation. what is the interaction between Ferrell and Polar cell circulation?
