Others have thought of it as moving in waves. Today, scientists believe that light behaves both as a wave and as a particle.
हे “अदृश्‍य अरण्य ” कोट्यवधी टन कार्बन डायॉक्साइडची विल्हेवाट लावून हवा शुद्ध राखण्याचे काम करते.