The two pie charts reveal the ratio of the five particular types of electric energy production in the United State in 1970 and 1980.
At the onset, it is apparently seen that the ratio of coal and nuclear grew markedly whereas others declined.
Now, turning to the details: Coal occupied the highest percentage of the electiric energy production in five major sources of energy during these ten years: rising from 47 % in 1970 to 51 % in 1980. The ratio of hydro in 1980 was three quarters times as high as that of hydro in 1970 (12 % compared with 16 %). The percentages of oil in 1970 and 1980 were roughly similar, 12 % and 11 % respectively. Conversely, there was a considerable growth in the percentage of nuclear from 1970 to 1980, increasing from 1% to 11%. Natural gas also experienced a gradual fall in the proportion of the eclectric energy production, from 24 % in 1970 to 15 % in 1980.
The two pie charts reveal the ratio of the five particular types of electric
energy
production in the United State in 1970 and 1980.
At the onset, it is
apparently
seen
that the ratio of coal and nuclear grew
markedly
whereas others declined.
Now
, turning to the
details
: Coal occupied the highest percentage of the
electiric
energy
production in five major sources of
energy
during these ten years: rising from 47 % in 1970 to 51 % in 1980. The ratio of hydro in 1980 was three quarters times as high as that of hydro in 1970 (12 % compared with 16 %). The percentages of oil in 1970 and 1980 were roughly similar, 12 % and 11 %
respectively
.
Conversely
, there was a considerable growth in the percentage of nuclear from 1970 to 1980, increasing from 1% to 11%. Natural gas
also
experienced a gradual fall in the proportion of the
eclectric
energy
production, from 24 % in 1970 to 15 % in 1980.