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 the lecture, the professor thought the solutions were unrealistic due to the following reasons.
Firstly, the solid materials left during the removal can increase the health risk. By using special desalination facilities, salt and other materials would be left behind, causing the pollution in the area. For example, during the process, it may lead to some chemical materials discharged in the air, hurting other people's health.
Secondly, although the solution of diluting the salt level from ocean is reasonable, the government does not have enough money to support the construction of the pipelines or canals because the Pacific ocean is one kilometer away from the lake. In practice, the government cannot pay for the construction fee.
Thirdly, because some geographic disasters often happen in this area such as earthquakes, the walls built for division can be destroyed by the disasters. As a result, it seems like the walls cannot last for a long time, causing the original plan cannot be achieved.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2019-12-02 | lynn19971020 | 76 | view |
| 2019-10-10 | Shayooooon | 86 | view |
| 2019-03-29 | ouma | 76 | view |
| 2018-12-29 | jian1kang | 76 | view |
| 2018-09-25 | CH97ch | 76 | view |
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Grammar and spelling errors:
Line 3, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...alistic due to the following reasons. Firstly, the solid materials left during...
^^^^
Transition Words or Phrases used:
first, firstly, if, may, second, secondly, so, third, thirdly, for example, such as, as a result
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 6.0 10.4613686534 57% => More to be verbs wanted.
Auxiliary verbs: 7.0 5.04856512141 139% => OK
Conjunction : 2.0 7.30242825607 27% => More conjunction wanted.
Relative clauses : 0.0 12.0772626932 0% => More relative clauses wanted.
Pronoun: 3.0 22.412803532 13% => OK
Preposition: 18.0 30.3222958057 59% => More preposition wanted.
Nominalization: 7.0 5.01324503311 140% => OK
Performance on vocabulary words:
No of characters: 869.0 1373.03311258 63% => OK
No of words: 162.0 270.72406181 60% => More content wanted.
Chars per words: 5.36419753086 5.08290768461 106% => OK
Fourth root words length: 3.56762134501 4.04702891845 88% => OK
Word Length SD: 2.74810627457 2.5805825403 106% => OK
Unique words: 105.0 145.348785872 72% => More unique words wanted.
Unique words percentage: 0.648148148148 0.540411800872 120% => OK
syllable_count: 257.4 419.366225166 61% => 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: 5.0 8.23620309051 61% => OK
Subordination: 3.0 1.25165562914 240% => Less adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 4.0 2.5761589404 155% => OK
Performance on sentences:
How many sentences: 8.0 13.0662251656 61% => 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: 20.0 21.2450331126 94% => OK
Sentence length SD: 51.7746016402 49.2860985944 105% => OK
Chars per sentence: 108.625 110.228320801 99% => OK
Words per sentence: 20.25 21.698381199 93% => OK
Discourse Markers: 12.0 7.06452816374 170% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 6.0 4.33554083885 138% => OK
Sentences with negative sentiment : 2.0 4.45695364238 45% => More negative sentences wanted.
Sentences with neutral sentiment: 0.0 4.27373068433 0% => More facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.110750540635 0.272083759551 41% => OK
Sentence topic coherence: 0.0396051422768 0.0996497079465 40% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0269540642547 0.0662205650399 41% => Sentences are similar to each other.
Paragraph topic coherence: 0.052040753786 0.162205337803 32% => Maybe some paragraphs are off the topic.
Paragraph topic coherence SD: 0.0352415052629 0.0443174109184 80% => OK
Essay readability:
automated_readability_index: 13.9 13.3589403974 104% => OK
flesch_reading_ease: 51.18 53.8541721854 95% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 11.1 11.0289183223 101% => OK
coleman_liau_index: 13.81 12.2367328918 113% => OK
dale_chall_readability_score: 9.21 8.42419426049 109% => OK
difficult_words: 47.0 63.6247240618 74% => More difficult words wanted.
linsear_write_formula: 11.0 10.7273730684 103% => OK
gunning_fog: 10.0 10.498013245 95% => OK
text_standard: 14.0 11.2008830022 125% => OK
What are above readability scores?
---------------------
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.