The two pie charts below show total world energy consumption and electricity generation for last year.

The two pie charts below show total world energy consumption and electricity generation for last year.
The pie charts illustrate the amount of each type of energy : coal, petroleum, natural gas ,nuclear and Hydro, produced in both 1980 and 2010 .
Overall
,
while
in 1980 most parts of the energy was represented by natural gases and coal, in 2010 nuclear energy has become the most popular type of power.
Firstly
, meanwhile in 1980 Nuclear power represented only 20 parts of the world's vitality, in 2010 it increased to 155 units, becoming the main force source.
Secondly
,petroleum had a small growth over the given period , from 22 to 27 units.
Furthermore
, the biggest decline has occurred in natural gas production, starting from 28 parts of the world's electricity, and ending at 2 proportions.
Nevertheless
,the only form of power source that remained constant was coal, so it represented 28 units in both years.Between 1980 and 2010, Hydropower stayed the least-used type of capacity , changing from 7 sections to only 2 sections.
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