A major effect of long<span>-term </span>weightlessness<span> involves the loss of bone and muscle mass. Without the effects of gravity, skeletal muscle is no longer required to maintain posture and the muscle groups used in moving around in a </span>weightless<span> environment differ from those required in terrestrial locomotion.
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The answer is D.all of the above because when you do all of these sports it requires skill and the right build
<span>osteoporosis exercises.
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