The diagram shows the consumption of renewable energy in the USA from 1949 to 2008.

The diagram shows the consumption of renewable energy in the USA from 1949 to 2008.
IELTS Writing Task Chart for The diagram shows the consumption of renewable energy in the USA from 1949 to 2008.
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The line graph highlights data about how much renewable energy was consumed in the USA, over a 59-year period from 1949 to 2008.
Overall
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, it is clearly seen that all kinds of renewable energy witnessed a significant increase. Looking into detail, as regards
overall
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and hydroelectric power consumption, they went in a similar direction until 2000. The former started at 3.6
quadrillion
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Btu
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which doubled the latter at the beginning of the period. Regarding the former and latter, they rose substantially from 2.4 to 7 and 1.8 to 2
quadrillion
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Btu
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respectively, despite some fluctuations over the period in question. As for wood, it remained relatively constant until 1975, accounting for 1.6
quadrillion
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Btu
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, after which it experienced negligible growth until 1989, reaching its peak (2.5
quadrillion
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Btu
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). If we look at biofuels and wind, there was little difference between the number of biofuels and wind, as the former made up 1.4
quadrillion
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Btu
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,
while
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the latter was lower by a margin of 0.3
quadrillion
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Btu
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in 2009.

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Linking words: Don't use the same linking words: "overall".
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Introduction: Change the first sentence in the introduction.
Introduction: The chart intro is missing.
Introduction: The chart intro is missing.
Vocabulary: Replace the words quadrillion, btu with synonyms.
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