Many scientists believe it would be possible to maintain a permanent human presence on Mars or the Moon. On the other hand, conditions on Venus are so extreme and inhospitable that maintaining a human presence there would be impossible.
First, atmospheric pressure at Venus’ surface is at least 90 times greater than the pressure at Earth’s surface. This means that a force of 100 kilograms is pressing down on every square centimeter of surface. All spacecraft that have landed on Venus have been crushed by this extreme pressure within an hour of landing. Almost anything humans might land on Venus would be crushed as well.
Second, as far as we know, there are no reservoirs of water on Venus’ surface, and the planet’s atmosphere, made up mostly of carbon dioxide, nitrogen, and sulfuric acid, contains hardly any oxygen or water vapor. Water and oxygen would therefore probably have to be supplied to Venus from Earth. The idea of ensuring a regular supply of water and oxygen from Earth is impractical in the extreme and would probably defeat the purpose of establishing a permanent station on Venus.
Third, very little sunlight reaches the planet’s surface. About 60 percent of the sunlight that hits Venus is reflected back into space by the thick clouds that fill the atmosphere, which means that only 40 percent of the sunlight can get through the clouds. Below these clouds is a dense layer of carbon dioxide, which blocks even more light, so very little light reaches the surface. The lack of light would prevent the use of solar power cells, so humans could not get electricity to power their machines and equipment.
The topic is discussing whether the human being could stay on Venus. The author and the lecturer state the opposite statements. Both of them claim three strong views.
First, the author claims that the pressure on Venus is too heavy for the human being to stay on it. The force is about 100 kilograms, and it not only will crash the human being but also damage the spacecraft. However, the lecturer holds a different view, which if people can build a fluid craft such as a ballon, they can stay 50 kilometers high from the surface of Venus. Thus, the pressure at this level is equal to the Earth.
In addition, the author argues that there is no surface water on Venus and also too much carbon dioxide in the atmosphere. It is impractical to be supplied from Earth. However, the lecture still gives the opposite statement. He holds that people can use chemical materials to produce water, and these can be found in the atmosphere.
Last but not least, the author holds that its a lack of sunlight on the surface because of the thick atmosphere which will reflect 60 percent of sunlight. Although there is 40 percent of sunlight will penetrate into the cloud, the dense layer which is made from carbon dioxide will block most of this sunlight. It causes many machines and equipment to have no power to run. In contrast, the lecture gives a resolving answer. He claims that the layer is not really thick, some sunlight can go through the layer. Using the sunlight which goes through the layer and reflects the cloud provides the machines and equipment to power up
Grammar and spelling errors:
Line 2, column 261, Rule ID: IF_IS[2]
Message: Did you mean 'is'?
Suggestion: is
... lecturer holds a different view, which if people can build a fluid craft such as ...
^^
Line 4, column 43, Rule ID: IT_IS[17]
Message: Did you mean 'it's' (='it is') instead of 'its' (possessive pronoun)?
Suggestion: it's; it is
...st but not least, the author holds that its a lack of sunlight on the surface becau...
^^^
Transition Words or Phrases used:
also, but, first, however, if, really, so, still, thus, in addition, in contrast, such as
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 14.0 10.4613686534 134% => OK
Auxiliary verbs: 10.0 5.04856512141 198% => OK
Conjunction : 9.0 7.30242825607 123% => OK
Relative clauses : 9.0 12.0772626932 75% => More relative clauses wanted.
Pronoun: 17.0 22.412803532 76% => OK
Preposition: 34.0 30.3222958057 112% => OK
Nominalization: 4.0 5.01324503311 80% => OK
Performance on vocabulary words:
No of characters: 1288.0 1373.03311258 94% => OK
No of words: 277.0 270.72406181 102% => OK
Chars per words: 4.64981949458 5.08290768461 91% => OK
Fourth root words length: 4.07962216107 4.04702891845 101% => OK
Word Length SD: 2.30577704939 2.5805825403 89% => OK
Unique words: 143.0 145.348785872 98% => OK
Unique words percentage: 0.516245487365 0.540411800872 96% => OK
syllable_count: 378.0 419.366225166 90% => OK
avg_syllables_per_word: 1.4 1.55342163355 90% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 5.0 3.25607064018 154% => OK
Article: 11.0 8.23620309051 134% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 2.0 1.51434878587 132% => OK
Preposition: 2.0 2.5761589404 78% => OK
Performance on sentences:
How many sentences: 17.0 13.0662251656 130% => OK
Sentence length: 16.0 21.2450331126 75% => The Avg. Sentence Length is relatively short.
Sentence length SD: 40.0452166577 49.2860985944 81% => OK
Chars per sentence: 75.7647058824 110.228320801 69% => OK
Words per sentence: 16.2941176471 21.698381199 75% => OK
Discourse Markers: 5.23529411765 7.06452816374 74% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 2.0 4.19205298013 48% => OK
Sentences with positive sentiment : 2.0 4.33554083885 46% => More positive sentences wanted.
Sentences with negative sentiment : 7.0 4.45695364238 157% => OK
Sentences with neutral sentiment: 8.0 4.27373068433 187% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.104666170975 0.272083759551 38% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.0385101902984 0.0996497079465 39% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0558972748113 0.0662205650399 84% => OK
Paragraph topic coherence: 0.0773023392153 0.162205337803 48% => OK
Paragraph topic coherence SD: 0.0428460609216 0.0443174109184 97% => OK
Essay readability:
automated_readability_index: 8.6 13.3589403974 64% => Automated_readability_index is low.
flesch_reading_ease: 72.16 53.8541721854 134% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 7.2 11.0289183223 65% => OK
coleman_liau_index: 9.39 12.2367328918 77% => OK
dale_chall_readability_score: 6.94 8.42419426049 82% => OK
difficult_words: 44.0 63.6247240618 69% => More difficult words wanted.
linsear_write_formula: 7.5 10.7273730684 70% => OK
gunning_fog: 8.4 10.498013245 80% => OK
text_standard: 9.0 11.2008830022 80% => OK
What are above readability scores?
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Rates: 68.3333333333 out of 100
Scores by essay e-grader: 20.5 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.