Oxygen is a vital element within cellular respiration. An intrinsic part of the cellular respiration cycle is the transfer or electrons through the electron transport chain, and at the end of it exists the mitochondria, in which electrons are donated to the Oxygen and combine with hydrogen ions to form water.
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2. muscular system and cardiovascular system
Kingdom, phylum, class, order, family, genus, species
Its stabilising. Since the selection pressure is against the extremes which are the normal blood and the sickle cell anaemia.
Answer:
C. Bacteria
Explanation:
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