The cramps can be caused due to anaerobic respiration in the muscles and lactic acid formation.
During intense physical activity the muscles become deprived of oxygen, in this condition, anaerobic respiration takes place in the muscle cells causes the formation of the lactic acid.
The physical training increases the strength of the muscles, which can help the muscles not to get tired easily. that is why, physical training is required before any marathon.
The answer would be 12 hope this helped
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passed on, inherited, passed on to offspring, most adapted to the environment or have the best adaptive traits or higher genetic fitness
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yes their is
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