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

Both lecture and passage are about mass extinction that engender the extinction of more than hall of all living species. Although author proposes 3 main reasons or assumption made about this topic, lecturer contradicts this facts by giving some
counterarguments.

Firstly, author accentuates that mass extinction might be due to declining sea levels, because near the end of Triassic period sea levels were fluctuating , and when sea level fall, it undermined habitats of species living close to coastal areas, so it has broken the food chain, which cause other animals become extinct because of starving. That being said, lecturer rebuts it by emphasizing and underlining statement that indeed sea levels were declining gradually in contrast to sudden decrease. And because species are able to get accustomed to new environment , it may never lead to extinction.

Secondly, author assets theory involving massive climate cooling, that might result in mass extinction. Moreover, he highlights claim that end of Triassic period was marked by widespread volcanic activities, that released large amounts of SO2 by lowering global temperature, and such kind of climate change could have give rise to mass extinction. However, lecturer refuted this theory by stating that SO2 remains for very short time because after a while it get into reaction with water in the atmosphere , and consequently it may not precipitate mass extinction.

Thirdly, author mentions asteroid strike, which can be also one of the reasons of mass extinction. He clarifies this fact by declaring that when asteroid hits earth's surface it may leave behind crater which can block the sunlight for many month or even a few years. Thus it may result in starvation of animals and death of many plants. Nonetheless, lecturer opposes this theory that there is no precise evidence of crater that goes back to that time, and therefore it is meaningless to uphold this theory.

Votes
Average: 9.5 (3 votes)
Essay Categories

Grammar and spelling errors:
Line 1, column 246, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...er contradicts this facts by giving some counterarguments. Firstly, author acc...
^^^
Line 4, column 155, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma, but not before the comma
Suggestion: ,
...assic period sea levels were fluctuating , and when sea level fall, it undermined ...
^^
Line 4, column 565, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma, but not before the comma
Suggestion: ,
...ble to get accustomed to new environment , it may never lead to extinction. Se...
^^
Line 5, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...ent , it may never lead to extinction. Secondly, author assets theory involving...
^^^
Line 6, column 246, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...s, that released large amounts of SO2 by lowering global temperature, and such k...
^^
Line 6, column 256, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...leased large amounts of SO2 by lowering global temperature, and such kind of cli...
^^
Line 6, column 508, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...to reaction with water in the atmosphere , and consequently it may not precipitat...
^^
Line 6, column 509, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma, but not before the comma
Suggestion: ,
...o reaction with water in the atmosphere , and consequently it may not precipitate...
^^
Line 8, column 48, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
..., author mentions asteroid strike, which can be also one of the reasons of mass e...
^^
Line 8, column 236, Rule ID: MANY_NN[1]
Message: Possible agreement error. The noun month seems to be countable; consider using: 'many months'.
Suggestion: many months
...crater which can block the sunlight for many month or even a few years. Thus it may result...
^^^^^^^^^^
Line 8, column 268, Rule ID: SENT_START_CONJUNCTIVE_LINKING_ADVERB_COMMA[1]
Message: Did you forget a comma after a conjunctive/linking adverb?
Suggestion: Thus,
...ght for many month or even a few years. Thus it may result in starvation of animals ...
^^^^

Transition Words or Phrases used:
also, but, consequently, first, firstly, however, if, may, moreover, nonetheless, second, secondly, so, therefore, third, thirdly, thus, while, in contrast, kind of, in contrast to

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

Performance on Part of Speech:
To be verbs : 10.0 10.4613686534 96% => OK
Auxiliary verbs: 9.0 5.04856512141 178% => OK
Conjunction : 10.0 7.30242825607 137% => OK
Relative clauses : 17.0 12.0772626932 141% => OK
Pronoun: 29.0 22.412803532 129% => Less pronouns wanted
Preposition: 39.0 30.3222958057 129% => OK
Nominalization: 14.0 5.01324503311 279% => Less nominalizations (nouns with a suffix like: tion ment ence ance) wanted.

Performance on vocabulary words:
No of characters: 1636.0 1373.03311258 119% => OK
No of words: 309.0 270.72406181 114% => OK
Chars per words: 5.29449838188 5.08290768461 104% => OK
Fourth root words length: 4.1926597562 4.04702891845 104% => OK
Word Length SD: 2.75941249738 2.5805825403 107% => OK
Unique words: 188.0 145.348785872 129% => OK
Unique words percentage: 0.608414239482 0.540411800872 113% => OK
syllable_count: 495.0 419.366225166 118% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK

A sentence (or a clause, phrase) starts by:
Pronoun: 7.0 3.25607064018 215% => Less pronouns wanted as sentence beginning.
Article: 0.0 8.23620309051 0% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 5.0 1.51434878587 330% => Less conjunction wanted as sentence beginning.
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: 25.0 21.2450331126 118% => OK
Sentence length SD: 73.0882267461 49.2860985944 148% => OK
Chars per sentence: 136.333333333 110.228320801 124% => OK
Words per sentence: 25.75 21.698381199 119% => OK
Discourse Markers: 15.0 7.06452816374 212% => Less transition words/phrases wanted.
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 11.0 4.19205298013 262% => Less language errors wanted.
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: 0.210359083319 0.272083759551 77% => OK
Sentence topic coherence: 0.0682446306357 0.0996497079465 68% => OK
Sentence topic coherence SD: 0.0877117841094 0.0662205650399 132% => OK
Paragraph topic coherence: 0.12464577098 0.162205337803 77% => OK
Paragraph topic coherence SD: 0.0638583176415 0.0443174109184 144% => OK

Essay readability:
automated_readability_index: 16.4 13.3589403974 123% => OK
flesch_reading_ease: 46.1 53.8541721854 86% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 13.0 11.0289183223 118% => OK
coleman_liau_index: 13.7 12.2367328918 112% => OK
dale_chall_readability_score: 9.02 8.42419426049 107% => OK
difficult_words: 81.0 63.6247240618 127% => OK
linsear_write_formula: 13.5 10.7273730684 126% => OK
gunning_fog: 12.0 10.498013245 114% => OK
text_standard: 14.0 11.2008830022 125% => OK
What are above readability scores?

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Rates: 86.6666666667 out of 100
Scores by essay e-grader: 26.0 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.