Because the way our solar system works it only happens either yearly or just depends on the situations
A woman type O has a child with a man type AB the child could have A, B, AB, or O blood type. A and B are the dominate alleles but that does not completely rule out O. Blood type is determined much like eye color.
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pH: If it's to much on either the alkaine or the acid side the enzymes will vary
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Answer:Plate tectonics role on earths surface by creating mountains, valleys, canyons, volcanoes, earthquakes, basins and different rock formationslatformationse
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