The illustrations demonstrate information regarding the prevalent sources of energy in the United States of America in the years 1980 and 1990.
Overall, it is crystal clear that oil was the predominant energy source in both years, whereas both hydroelectric power and nuclear power contributed a small amount during the given period.
To commence with, it is vividly clear that approximately two-fifths of the energy source was oil in 1980, recording a moderate decline in the next decade to 33%. Moreover, natural gas accounted for nearly one-quarter of the total in both years.
Moving further, coal made up 22% of the total, with a slight increase to 27% in the next 10 years. Furthermore, both hydroelectric power and nuclear power were at equivalent levels in 1980, at 5%. This trend remained the same for hydroelectric power in the next decade, while nuclear power doubled in 1990, consisting of 10%.