The main graphs show the main sources of energy in the USA in 1980 and 1990

The main graphs show the main sources of energy in the USA in 1980 and 1990
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The two pie charts provide information about
USA’s
Correct article usage
the USA’s
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main
source
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of
energy
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from 1980 to 1990.
Overall
Linking Words
, Oil made up the largest
source
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of
energy
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in the USA,
while
Linking Words
hydroelectric
power
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and nuclear
power
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were the least in the 10-year
period
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.
However
Linking Words
, Oil and natural gas experienced a decrease,
whereas
Linking Words
coal and nuclear
power
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were
Unnecessary verb
apply
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increased. In 1980, that major
source
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of
energy
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was oil accounted for 42%,
Linking Words
however
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however,
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it fell significantly to 33%
at the end
Linking Words
of the
period
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, but it remained the main
source
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of
energy
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for
USA
Correct article usage
the USA
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.
In addition
Linking Words
, Natural gas made up 26% of the
energy
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sources at the beginning of the
period
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, and it dropped to 25% in 1990.
Whereas
Linking Words
, hydroelectric
power
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remained constant throughout the
period
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at 5%.
On the other hand
Linking Words
, coal made up less than one quarter as a
source
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of
energy
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in 1980, but it rose by 5% in 1990 making it the second main
source
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of
energy
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in the USA reaching 27%.
Although
Linking Words
nuclear
power
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was one of the least
energy
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Use synonyms
source
Change to a plural noun
sources
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in 1980, it experienced a rise to 10%
at the end
Linking Words
of the given
period
Use synonyms
.
Submitted by dana-sh on

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Linking words: Don't use the same linking words: "at the end, however, whereas".
Vocabulary: Replace the words source, energy, power, period with synonyms.
Vocabulary: The word "remained" was used 2 times.
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