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 author in the passage states that mass extinction occurred at the end of the Triassic period 200 million years ago which as several possible theories. Three prominent factors stated in passage are fluctuating sea levels, massive climate cooling and asteroid strike. However, the speaker disagrees that these three factors caused the mass extinction and elaborates why these factors might not be responsible for it.

While the passage states fluctuating sea levels might have destroyed the species living in shallow ocean and coastal area , the speaker says that it might not be responsible for mass extinction because this factor needs to be sudden and the species in the shallows and coastal were quite adaptable for slow and gradual changes.

On global cooling, the author disregards the theory of passage and gives his explanation as follows. The global cooling occurred for relatively short period which wasn't enough to cause mass extinction. The SO2 released by volcanoes stayed for relatively shorter time in atmosphere as it combines with water and causes rain.

Finally, the speaker says that the asteroid strike occurred about 12 million years before extinction is not responsible for extinction of animals and plant species.

Thus, the speaker successfully refutes the possible extinction factors by giving his explanation.

Votes
Average: 8.1 (1 vote)
Essay Categories

Grammar and spelling errors:
Line 3, column 122, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma, but not before the comma
Suggestion: ,
...living in shallow ocean and coastal area , the speaker says that it might not be r...
^^
Line 5, column 164, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: wasn't
...urred for relatively short period which wasnt enough to cause mass extinction. The SO...
^^^^^

Transition Words or Phrases used:
finally, however, so, thus, while

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: 3.0 5.04856512141 59% => OK
Conjunction : 9.0 7.30242825607 123% => OK
Relative clauses : 6.0 12.0772626932 50% => More relative clauses wanted.
Pronoun: 12.0 22.412803532 54% => OK
Preposition: 17.0 30.3222958057 56% => More preposition wanted.
Nominalization: 9.0 5.01324503311 180% => OK

Performance on vocabulary words:
No of characters: 1141.0 1373.03311258 83% => OK
No of words: 208.0 270.72406181 77% => More content wanted.
Chars per words: 5.48557692308 5.08290768461 108% => OK
Fourth root words length: 3.79765784423 4.04702891845 94% => OK
Word Length SD: 2.61517287016 2.5805825403 101% => OK
Unique words: 118.0 145.348785872 81% => More unique words wanted.
Unique words percentage: 0.567307692308 0.540411800872 105% => OK
syllable_count: 337.5 419.366225166 80% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK

A sentence (or a clause, phrase) starts by:
Pronoun: 0.0 3.25607064018 0% => OK
Article: 8.0 8.23620309051 97% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 1.0 2.5761589404 39% => More preposition wanted as sentence beginning.

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: 23.0 21.2450331126 108% => OK
Sentence length SD: 67.8409541629 49.2860985944 138% => OK
Chars per sentence: 126.777777778 110.228320801 115% => OK
Words per sentence: 23.1111111111 21.698381199 107% => OK
Discourse Markers: 3.66666666667 7.06452816374 52% => More transition words/phrases wanted.
Paragraphs: 5.0 4.09492273731 122% => 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 : 4.0 4.45695364238 90% => OK
Sentences with neutral sentiment: 3.0 4.27373068433 70% => OK
What are sentences with positive/Negative/neutral sentiment?

Coherence and Cohesion:
Essay topic to essay body coherence: 0.260019146246 0.272083759551 96% => OK
Sentence topic coherence: 0.1087473658 0.0996497079465 109% => OK
Sentence topic coherence SD: 0.0916961093773 0.0662205650399 138% => OK
Paragraph topic coherence: 0.143316889866 0.162205337803 88% => OK
Paragraph topic coherence SD: 0.0609960706874 0.0443174109184 138% => OK

Essay readability:
automated_readability_index: 16.0 13.3589403974 120% => OK
flesch_reading_ease: 48.13 53.8541721854 89% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 12.3 11.0289183223 112% => OK
coleman_liau_index: 14.86 12.2367328918 121% => OK
dale_chall_readability_score: 8.88 8.42419426049 105% => OK
difficult_words: 54.0 63.6247240618 85% => More difficult words wanted.
linsear_write_formula: 13.5 10.7273730684 126% => OK
gunning_fog: 11.2 10.498013245 107% => OK
text_standard: 9.0 11.2008830022 80% => OK
What are above readability scores?

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Rates: 81.6666666667 out of 100
Scores by essay e-grader: 24.5 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.