<Tr> <Td> (7ii) </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> → </Td> <Td> He </Td> <Td> + </Td> <Td> He </Td> <Td> </Td> <Td> + </Td> <Td> n </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> + </Td> <Td> 2.56 MeV </Td> </Tr> <Tr> <Td> (7iii) </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> → </Td> <Td> Li </Td> <Td> + </Td> <Td> p </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> + </Td> <Td> 5.0 MeV </Td> </Tr> <Tr> <Td> (7iv) </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> → </Td> <Td> Be </Td> <Td> + </Td> <Td> n </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> + </Td> <Td> 3.4 MeV </Td> </Tr> <Tr> <Td> (8) </Td> <Td> p </Td> <Td> + </Td> <Td> Li </Td> <Td> → </Td> <Td> He </Td> <Td> (</Td> <Td> 1.7 MeV </Td> <Td>) </Td> <Td> + </Td> <Td> He </Td> <Td> (</Td> <Td> 2.3 MeV </Td> <Td>) </Td> </Tr>

Where does energy come from in fusion reaction