The Salton Sea in California is actually a salty inland lake. The level of salt in the lake’s water—what scientists call its salinity—has been increasing steadily for years because the lake’s water is evaporating faster than it is being replaced by rainfall or rivers. If the trend continues, the lake’s water will soon become so salty that the lake will be unable to support fish and bird populations. The lake would then become essentially a dead zone. Fortunately, there are several ways to reverse the trend that is threatening the lake’s health.
One option is direct removal of salt from the lake’s water in special desalination facilities. Water from the lake would be pumped into the facilities and heated. This would cause the water to evaporate into steam, while salt and other materials dissolved in the water would be left behind. The steam would then be cooled down and returned to the lake as salt-free water. Gradually, the high salt levels would be reduced and the lake’s overall health would be restored.
Another possible solution is to dilute the salt level in the lake with water from the ocean. Since water in the Pacific Ocean is 20 percent less salty than water in the lake, bringing ocean water into the lake would decrease the lake’s salinity. The ocean water could be delivered through pipelines or canals.
Yet another solution would be to control the lake’s salinity by constructing walls to divide the lake into several sections. In the smaller sections, salinity would be allowed to increase. However, in the main and largest section, salinity would be reduced and controlled by, among other things, directing all the freshwater from small rivers in the area to flow into that main section of the lake.
In contrast to the reading passage, which fully supports that the three methods can reduce the high salt levels in Salton Sea, the professor thinks these solutions are unrealistic and impractical based on the following reasons.
Firstly, the professor refutes the solution of special desalination facilities which mentions in the article by reminding there are some materials dissolved in the water are toxic. That is to say, if the wind blows these materials into the air, people's health would be influenced once they breathed in those harmful materials.
Secondly, the professor points out that constructing pipelines to dillute the salt level in the lake from ocean is expensive. To be more specific, the distance between Salton Sea to the nearest ocean is more than 100 kilometer. Since the fee of pipeline construction is exclusively high, government may not have financial resource to pay for this item.
Finally, it is proposed in the article that constructing walls to divide the lake into sections can control the salt level of main section, because the wall can direct freshwater from rivers into the main section. However, the professor suggests that the solution can not last long by providing the fact that the high frequency of geological change in California. For this reason, the walls would collapse due to intense earthquakes, then solution can not work permanently.
Grammar and spelling errors:
Line 5, column 218, Rule ID: CD_NN[1]
Message: Possible agreement error. The noun 'kilometer' seems to be countable, so consider using: 'kilometers'.
Suggestion: kilometers
...a to the nearest ocean is more than 100 kilometer. Since the fee of pipeline construction...
^^^^^^^^^
Transition Words or Phrases used:
finally, first, firstly, however, if, may, second, secondly, so, then, in contrast, in contrast to, that is to say
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 10.0 10.4613686534 96% => OK
Auxiliary verbs: 8.0 5.04856512141 158% => OK
Conjunction : 1.0 7.30242825607 14% => More conjunction wanted.
Relative clauses : 8.0 12.0772626932 66% => More relative clauses wanted.
Pronoun: 13.0 22.412803532 58% => OK
Preposition: 31.0 30.3222958057 102% => OK
Nominalization: 9.0 5.01324503311 180% => OK
Performance on vocabulary words:
No of characters: 1171.0 1373.03311258 85% => OK
No of words: 223.0 270.72406181 82% => More content wanted.
Chars per words: 5.25112107623 5.08290768461 103% => OK
Fourth root words length: 3.86434787811 4.04702891845 95% => OK
Word Length SD: 2.7327267429 2.5805825403 106% => OK
Unique words: 135.0 145.348785872 93% => More unique words wanted.
Unique words percentage: 0.605381165919 0.540411800872 112% => OK
syllable_count: 354.6 419.366225166 85% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 3.25607064018 61% => OK
Article: 6.0 8.23620309051 73% => OK
Subordination: 3.0 1.25165562914 240% => Less adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 3.0 2.5761589404 116% => OK
Performance on sentences:
How many sentences: 9.0 13.0662251656 69% => Need more sentences. Double check the format of sentences, make sure there is a space between two sentences, or have enough periods. And also check the lengths of sentences, maybe they are too long.
Sentence length: 24.0 21.2450331126 113% => OK
Sentence length SD: 42.3585518353 49.2860985944 86% => OK
Chars per sentence: 130.111111111 110.228320801 118% => OK
Words per sentence: 24.7777777778 21.698381199 114% => OK
Discourse Markers: 12.6666666667 7.06452816374 179% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 3.0 4.33554083885 69% => OK
Sentences with negative sentiment : 2.0 4.45695364238 45% => More negative sentences wanted.
Sentences with neutral sentiment: 4.0 4.27373068433 94% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.153881978902 0.272083759551 57% => OK
Sentence topic coherence: 0.0570535606278 0.0996497079465 57% => OK
Sentence topic coherence SD: 0.0382490845792 0.0662205650399 58% => OK
Paragraph topic coherence: 0.0834040741056 0.162205337803 51% => OK
Paragraph topic coherence SD: 0.0342385201696 0.0443174109184 77% => OK
Essay readability:
automated_readability_index: 15.7 13.3589403974 118% => OK
flesch_reading_ease: 47.12 53.8541721854 87% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 12.7 11.0289183223 115% => OK
coleman_liau_index: 13.47 12.2367328918 110% => OK
dale_chall_readability_score: 9.36 8.42419426049 111% => OK
difficult_words: 64.0 63.6247240618 101% => OK
linsear_write_formula: 14.0 10.7273730684 131% => OK
gunning_fog: 11.6 10.498013245 110% => OK
text_standard: 14.0 11.2008830022 125% => OK
What are above readability scores?
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Rates: 76.6666666667 out of 100
Scores by essay e-grader: 23.0 Out of 30
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Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.