The Potential Effects of a Depleted Ozone Layer - Detrykowski "And God said, let there be light and there was light and then God saw the light, that it was good " ( Genesis 1: 3-4 ). Undoubtedly, light is good. Without light man could not survive. Light is the ultimate cosmic force in this universe allowing man to progress and flourish. In the form of heat, light from the sun warms the Earth. Light, also, is the single most important factor influencing the growth and development of plants. Photosynthesis, a process by which plants incorporate light from the sun, allow plants t