Photosynthesis is a process that certain organisms called autotrophs, undergo to make their own food. Autotrophs are also called producers. Some examples of autotrophs/producers are plants and algae.
The photosynthesis equation is
carbon dioxide+water+light energy —> glucose+ oxygen
Carbon dioxide, water and light energy from the sun are turned into glucose (the food for the organism) and oxygen (waste product).
The sun provides the plant with light energy for photosynthesis. Therefore, the answer is light energy.
The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct
• But they do not happen every full moon night because Earth's orbit around the sun is not in the same plane as the moon's orbit around the earth. Eclipse occur only if the the sun, the earth and the moon come to lie in a straight line.