In general a good source of energy would be one,
(i) which would do a large amount of work per unit mass or volume
(ii) which would be easily accessible.
(iii) which can be easily stored and transported.
(iv) which is also reasonably economical.
What are the disadvantages of fossil fuels?
If you could use any source of energy for heating your food, which one would you use and why?
What is a good fuel?
