The given pie charts compare the significant energy sources in the USA between the years 1980 and 1990.
Overall
, Linking Words
it is clear that
oil and natural gas sources decreased, Linking Words
while
coal and nuclear Linking Words
power
increased from 1980 to 1990. Use synonyms
By contrast
, it is interesting to note that hydroelectric Linking Words
power
remained at the same level over the same decade shown. Looking at the pie charts in more detail, Use synonyms
oil
source of Correct article usage
the oil
USA
fell noticeably from 42% to 33%. Despite the fact that there was not any critical decrease, Correct article usage
the USA
however
, the proportion of natural gas witnessedLinking Words
1
% drop from 1980 to 1990. The ratio for hydroelectric Correct article usage
a 1
power
was stable at 5% Use synonyms
at
the same period shown. It could be Change preposition
in
explain
Wrong verb form
explained
the
fact that the sources of coal and nuclear Change preposition
by the
power
increased equally (5%). Use synonyms
In particular
, the percentage of coal grew from 22% to 27%. The level of nuclear Linking Words
power
source raised two times from 5% to 10%.Use synonyms
mr.mehdiyevkamran