Osmosis is the diffusion of water in high to low concentration. It doesn’t use energy. It helps equal out the solute concentration.
Buddha is shown symbolically through a wheel or footprints as well as Mahayan symbols. The Eight-Spoked Dharma Wheel portrays, In which the Buddha is turning the Wheel of Truth. It is the most important of all the buddhism symbols. Footprints represents the physical presence of Buddha.
C. calcium is your answer