We depend on light energy for food and fuel. Explain briefly​

We depend on light energy or solar energy for food because we get the our food from plants which in turn depend on the sun for their food. ... Solar energy produces food, wood (plants need sunlight to grow and make food, so trees produce wood and indirectly the sun produces wood) which are used to get fossil fuels.

The basic repeating unit of nucleic acids are known as nucleotides. a nucleotide consists of three distinct chemical groups.