- Societies are completely dependent on energy resources. The quantity of energy is conserved in any conversion but the quality is degraded.
- The energy  of fossil fuels originates  from solar energy  which has been stored by chemical  processes  over time. These abundant  resources  are non- renewable but provide large amounts of energy due to the nature of chemical bonds in hydrocarbons.
- The fusion of hydrogen  nuclei in the sun is the source of much of the energy needed  for life on Earth.  There are many technological  challenges  in replicating this process on Earth but it would offer a rich source of energy. Fission involves the splitting of a large unstable nucleus into smaller stable nuclei.
 option_c_core.pdf
option_c_core.pdf