The pie charts below show the units of electricity production of fuel by source in Australia and France in 1980 and 2000.

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The pie charts below show the units of electricity production of fuel by source in Australia and France in 1980 and 2000.

The given charts provide statistical information about the proportion of main fuel sources in production process of electricity, namely; coal, oil, natural gas, hydro power and nuclear power across the two decades in various countries. Overall, the total production of electricity almost doubled in both indicated countries and Australia preferred using coal as the major source whereas France utilized quite various sources in 1980 and preferred nuclear power in 2000.

It is apparent that, in Australia half of total production belonged to coal which experienced a threefold increase during 20 years. Furthermore, the usage of hydro power soared by 16 units while figures for natural gas and oil fell dramatically, to be more precise, from 20 to 2 units and from 10 to 2 units respectively.

In comparison with Australia, France used nuclear power as an additional source and the main share belonged to coal and natural gas which were identical (25 %) and closely followed by oil, nuclear power and hydro power accordingly. Between 1980 and 2000 there were a staggering alteration in distribution of fuel sources, to be more specific, the share of nuclear power was approximately three fourth of total production while figures for oil and coal, and hydro power and natural gas showed the similar indicators.

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Sentence: Between 1980 and 2000 there were a staggering alteration in distribution of fuel sources, to be more specific, the share of nuclear power was approximately three fourth of total production while figures for oil and coal, and hydro power and natural gas showed the similar indicators.
Description: The fragment a staggering alteration is not usually preceded by were
Suggestion: Possible agreement error: Replace were with was

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Avg. Sentence Length: 34.833 21.0

Make sentences shorter, for example:

Furthermore, the usage of hydro power soared by 16 units while figures for natural gas and oil fell dramatically, to be more precise, from 20 to 2 units and from 10 to 2 units respectively.

It is not clear for which is which: 'from 20 to 2 units and from 10 to 2 units respectively.' .

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Score: 7.0 out of 9
Category: Good Excellent
No. of Grammatical Errors: 1 2
No. of Spelling Errors: 0 2
No. of Sentences: 6 10
No. of Words: 209 200
No. of Characters: 1074 1000
No. of Different Words: 108 100
Fourth Root of Number of Words: 3.802 4.0
Average Word Length: 5.139 4.6
Word Length SD: 2.764 2.4
No. of Words greater than 5 chars: 76 60
No. of Words greater than 6 chars: 64 50
No. of Words greater than 7 chars: 38 40
No. of Words greater than 8 chars: 31 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 34.833 21.0
Sentence Length SD: 7.312 7.5
Use of Discourse Markers (%): 0.667 0.12
Sentence-Text Coherence: 0.548 0.35
Sentence-Para Coherence: 0.769 0.50
Sentence-Sentence Coherence: 0.17 0.07
Number of Paragraphs: 3 4