The electron transport chain and ATP synthase are embedded in the inner mitochondrial membrane.The electrons flow through the electron transport chain, causing protons to be pumped from the matrix to the intermembrane space. Eventually, the electrons are passed to oxygen, which combines with protons to form water.
It form the contraction and relaxation of muscle
C. winter solstice because if the North is having summer, the south would be having the opposite due to the direction the earth is tilted in orbit
