Circulatory system controls all of your actvity and it transfferes blood to your brain so you wont have a stroke
AT THE START
The cycling action encourages repetitive movement of the ankle, which helps mobilise the joints and builds strength in the legs. Place the band around the feet and pull it up towards the body. This is a good exercise to strengthen the muscles.
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The human heart contains an estimated 2–3 billion cardiac muscle cells, but these account for less than a third of the total cell number in the heart.
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because the brain isnt fully developed yet
Answer:because they all make music and they have to play with some try of instrument
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