Explain the statement: the energy for all organisms in a food web can be traced back to the son. note: do not write “the sun is our main source of energy” ( answer fast)

The energy in all food webs and chains can, in fact, be traced back to the sun. The sun produces different types of electromagnetic energy waves, one of which is visible light. This type of energy cannot be used by most organisms; except for plants. They convert light energy into chemical energy via the process of photosynthesis. This chemical energy is now available to pass through the trophic levels of food chains.  

The plates kept rubbing together