At the end of the Triassic period 200 million years ago, there was a mass-extinction event that caused the extinction of more than half of all living species.
As the reading mentions, at the end of the Triassic period 200 million years ago, a mass-extinction event eliminated too many of the living species. Still, the cause of this massive extinction is not uncovered. The writer elaborates on several possible explanations for this phenomenon. However, the professor states that these explanations may be plausible, but they are not strongly supported to cause the mass extinction.
The first theory declares that the decline of sea levels causes the habitats in the shallow areas to be destroyed and profoundly affects food chains worldwide. The speaker rebuts this idea and elaborates that the habitats in coastal areas are very adoptive; on the other hand, the slow change of sea levels could not cause massive destruction only if the change of sea level was so sudden.
The second idea states that massive climate cooling could have devastated many species. However, the lecturer explains that although SO2 could cause climate cooling, it is unlikely to be the cause of extinction. Because this phenomenon happened in a short amount of time, yet the traces of SO2 is still in the atmosphere.
The last theory involves an asteroid strike that collided with the earth. The displaced debris is thrown up into the atmosphere, where it can block out sunlight for enough amount of time to eradicate many of the species. In contrast, the professor states that an enormous asteroid must have left behind a crater, but no such thing was found that happened in that period.
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Grammar and spelling errors:
Line 3, column 1, Rule ID: ENGLISH_WORD_REPEAT_BEGINNING_RULE
Message: Three successive sentences begin with the same word. Reword the sentence or use a thesaurus to find a synonym.
...he change of sea level was so sudden. The second idea states that massive climate...
^^^
Transition Words or Phrases used:
but, first, however, if, may, second, so, still, as to, in contrast, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 11.0 10.4613686534 105% => OK
Auxiliary verbs: 6.0 5.04856512141 119% => OK
Conjunction : 5.0 7.30242825607 68% => OK
Relative clauses : 10.0 12.0772626932 83% => OK
Pronoun: 17.0 22.412803532 76% => OK
Preposition: 29.0 30.3222958057 96% => OK
Nominalization: 5.0 5.01324503311 100% => OK
Performance on vocabulary words:
No of characters: 1266.0 1373.03311258 92% => OK
No of words: 250.0 270.72406181 92% => More content wanted.
Chars per words: 5.064 5.08290768461 100% => OK
Fourth root words length: 3.97635364384 4.04702891845 98% => OK
Word Length SD: 2.66514089684 2.5805825403 103% => OK
Unique words: 144.0 145.348785872 99% => OK
Unique words percentage: 0.576 0.540411800872 107% => OK
syllable_count: 391.5 419.366225166 93% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 1.0 3.25607064018 31% => OK
Article: 12.0 8.23620309051 146% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 3.0 1.51434878587 198% => OK
Preposition: 3.0 2.5761589404 116% => OK
Performance on sentences:
How many sentences: 12.0 13.0662251656 92% => OK
Sentence length: 20.0 21.2450331126 94% => OK
Sentence length SD: 45.3363969553 49.2860985944 92% => OK
Chars per sentence: 105.5 110.228320801 96% => OK
Words per sentence: 20.8333333333 21.698381199 96% => OK
Discourse Markers: 7.16666666667 7.06452816374 101% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 1.0 4.33554083885 23% => More positive sentences wanted.
Sentences with negative sentiment : 6.0 4.45695364238 135% => OK
Sentences with neutral sentiment: 5.0 4.27373068433 117% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.204000149612 0.272083759551 75% => OK
Sentence topic coherence: 0.0742038443023 0.0996497079465 74% => OK
Sentence topic coherence SD: 0.134100249979 0.0662205650399 203% => The coherence between sentences is low.
Paragraph topic coherence: 0.117249876833 0.162205337803 72% => OK
Paragraph topic coherence SD: 0.140903096036 0.0443174109184 318% => More connections among paragraphs wanted.
Essay readability:
automated_readability_index: 12.8 13.3589403974 96% => OK
flesch_reading_ease: 51.18 53.8541721854 95% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 11.1 11.0289183223 101% => OK
coleman_liau_index: 12.07 12.2367328918 99% => OK
dale_chall_readability_score: 8.61 8.42419426049 102% => OK
difficult_words: 63.0 63.6247240618 99% => OK
linsear_write_formula: 8.5 10.7273730684 79% => OK
gunning_fog: 10.0 10.498013245 95% => OK
text_standard: 9.0 11.2008830022 80% => OK
What are above readability scores?
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Rates: 70.0 out of 100
Scores by essay e-grader: 21.0 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.