What is the significance of light for living organisms?

Sunlight is essential for most organisms. Indeed, under the influence of sunlight, photosynthesis occurs in plants, in the final product of which oxygen is produced, which is the basis for the course of life for many creatures on our planet. Also, light participates in the cycle of water in nature (ensures its evaporation). Many animals, including humans, live according to the “biological clock”, where light plays a huge role (day-night). In the light, a person produces vitamin D.