tenure
Because the energy released by nuclear fission is extremely great compared with the energy released by coal burning.
It requires 50 pounds of feed to produce a hundred eggs
It requires 261 pounds of feed to produce a hundred pounds of poultry
It requires 629 pounds of feed to produce a hundred pounds of pork
- the energy released from enriched uranium is higher compared to natural uranium- the amount of uranium needed for a reactor is lower- research reactors work only with enriched uranium- atomic bombs have highly enriched uranium or plutonium
Energy.
Water.
Being radioactive and toxic uranium may be a contaminant for the atmosphere, soils, waters, vegetation.Much care is needed to avoid these disadvanges.
The uranium as a metal is obtained by reducing UCl4 or UF4 with sodium, potassium etc.To prepare the very pure metal another step of refining is needed.
A Wikipedia article (see link below) gives the concentration of uranium in ore as 0.01 to 0.25 percent, which is a wide range. If we take 0.1 percent as typical, then 1 tonne (1000Kg) of ore would produce 1 Kg of uranium. This is natural uranium, which is normally enriched by about six times to produce suitable enriched uranium for fuel, so you can say that about 6 tonnes of ore would be needed to give 1 Kg of enriched uranium, but there is considerable variation of this from one source of ore to another
It is same as the animals.It produce energy needed.
Of course they have. They are needed to produce energy