the physical activity guidelines recommend that children should engage in of moderate to intense physical activity per day.

answer; /// i believe that the correct answer is (c); ///when the lungs expand, they fill with air from the atmosphere;

it hurts at first because " the cherry is broken" which is a thin layer of skin that breaks so the first time girls have sex it hurts and it bleeds but after the first time it does hurt again because the skin that ia torn does not break again/ grow back.

answer; /// an alphabetical list of sources arranged according to a citation style and followed by a summary of the content;