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. It was this extinction event that allowed dinosaurs to become the dominant species for the next

The lecture completely refutes the theories presented in the reading. She questions each of three theories that supports the mass-extinction at the end of the Triassic period 200 million years ago.

First of all, although it is true that the fallen of the sea level was occured near the end of Triassic period, the plant and the fish can adapt to its change. Moreover, the change was not happened as sudden as the reading said, it gone gradually.

Second, the reading asserts that there were many volcano activity back in that period which release huge amount of SO2 gas. These gas eventually will close the earth atmosphere so there will be no sunlight and earth temperature will decrease drastically. Such condition will make many species devastated. However, the lecture refutes this theory by saying that the SO2 gas will not maintained in the atmosphere for such long period. The gas will be clear out from the sky because it will mix with the water vapour and drop into rain.

Third, the professor disputes the theory that discusses the debris from impacted asteroids to earth's surface cause mass extinction. She cites some study which mentions the asteroid is dated 12 million years before the mass extenction prediction. So there will be no connection between that two events.

Votes
Average: 8.3 (1 vote)
Essay Categories

Grammar and spelling errors:
Line 5, column 383, Rule ID: DID_BASEFORM[1]
Message: The verb 'will' requires the base form of the verb: 'maintain'
Suggestion: maintain
...ory by saying that the SO2 gas will not maintained in the atmosphere for such long period....
^^^^^^^^^^

Transition Words or Phrases used:
first, however, moreover, second, so, third, first of all, it is true

Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments

Performance on Part of Speech:
To be verbs : 8.0 10.4613686534 76% => OK
Auxiliary verbs: 9.0 5.04856512141 178% => OK
Conjunction : 3.0 7.30242825607 41% => More conjunction wanted.
Relative clauses : 9.0 12.0772626932 75% => More relative clauses wanted.
Pronoun: 15.0 22.412803532 67% => OK
Preposition: 21.0 30.3222958057 69% => OK
Nominalization: 6.0 5.01324503311 120% => OK

Performance on vocabulary words:
No of characters: 1078.0 1373.03311258 79% => OK
No of words: 216.0 270.72406181 80% => More content wanted.
Chars per words: 4.99074074074 5.08290768461 98% => OK
Fourth root words length: 3.83365862548 4.04702891845 95% => OK
Word Length SD: 2.49359605029 2.5805825403 97% => OK
Unique words: 135.0 145.348785872 93% => More unique words wanted.
Unique words percentage: 0.625 0.540411800872 116% => OK
syllable_count: 315.9 419.366225166 75% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK

A sentence (or a clause, phrase) starts by:
Pronoun: 4.0 3.25607064018 123% => OK
Article: 7.0 8.23620309051 85% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 0.0 2.5761589404 0% => More preposition wanted as sentence beginning.

Performance on sentences:
How many sentences: 12.0 13.0662251656 92% => OK
Sentence length: 18.0 21.2450331126 85% => The Avg. Sentence Length is relatively short.
Sentence length SD: 32.7180717987 49.2860985944 66% => OK
Chars per sentence: 89.8333333333 110.228320801 81% => OK
Words per sentence: 18.0 21.698381199 83% => OK
Discourse Markers: 5.75 7.06452816374 81% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 4.0 4.45695364238 90% => OK
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: 0.173687262339 0.272083759551 64% => OK
Sentence topic coherence: 0.0607061737811 0.0996497079465 61% => OK
Sentence topic coherence SD: 0.0865195691675 0.0662205650399 131% => OK
Paragraph topic coherence: 0.119239910771 0.162205337803 74% => OK
Paragraph topic coherence SD: 0.0806272976378 0.0443174109184 182% => OK

Essay readability:
automated_readability_index: 11.1 13.3589403974 83% => Automated_readability_index is low.
flesch_reading_ease: 61.67 53.8541721854 115% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 9.1 11.0289183223 83% => OK
coleman_liau_index: 11.37 12.2367328918 93% => OK
dale_chall_readability_score: 8.4 8.42419426049 100% => OK
difficult_words: 53.0 63.6247240618 83% => More difficult words wanted.
linsear_write_formula: 11.0 10.7273730684 103% => OK
gunning_fog: 9.2 10.498013245 88% => OK
text_standard: 11.0 11.2008830022 98% => OK
What are above readability scores?

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Rates: 83.3333333333 out of 100
Scores by essay e-grader: 25.0 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.