After the hydrolysis of ATP, the actin would then rebind to the myosin which causes it to release the phospate group of the ATP which is said to allow the myosin conformational change while it is bonded to actin. Hope this answers the question.
Because photosynthesis need CO2 to work, but for cellular respiration CO2 is a waste, so it is <em>contributing </em>to the higher amounts of CO2 but it does not affect it
