Because the respiratory system will continue to force air down. Hope this helps.
Answer:The sliding filament model of muscle contraction, put forward by Hugh Huxley and Jean Hanson in 1954, is 60 years old in 2014. Formulation of the model and subsequent proof was driven by the pioneering work of Hugh Huxley (1924–2013).
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By the production of white blood cells and antibodies.
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The immune system's job is to identify foreign object and to make antibodies and white blood cells to fight said virus.
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Severe deficiency, called pellagra, can cause symptoms related to the skin, digestive system, and nervous system.
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