TPO 39- 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 145 million years. We do not know exactly what happened that eliminated so many species in a relatively short period of time, but there are several possible explanations.
The reading and lecture are both about extinction of all species at the end of Triassic period 200 million years ago. The author in the passage believes that there are three possible solutions to explain such phenomena. However, the lecturer casts doubts about the claims made in the passage, saying that there are no good explanation to explain the mass extinction.
First of all, the author points out that the one explanation for this theory is drop in sea level. The article notes that fluctuation of sea level can cause the habitat of different species to be destroyed and also can affect the food chain that would lead to mass extinction. Conversely, the point is challenged by the lecturer. She says that scientist agree that sea levels fluctuate over time. Furthermore, she argues that when sea level fluctuate the coastal shelf adapt to the ecosystem. In addition, fall of the ecosystem in the end of Triassic period were gradual and happened several million years ago and it would not affect the environment. Hence, when the sea level drastically dropped suddenly then negative impact can occur within the species and the ecosystem.
Secondly, the author contends that when volcanic activity occurred then sulfur oxide will be spread to the air leading to lowering of temperature of the environment, thus species cannot withstand harsh ecosystem causing their population decline. On the contrary, the lecturer rebuts this argument. She suggests that there are only short period of volcanic activity at that time. Moreover, she elaborates on this by mentioning that sulfur oxide is present in the atmosphere. As a result sulfur oxide will combine with water and fall into rain and there will be increase volume of sulfur oxide in the end of Triassic period causing mass extinction.
Finally, the author states that the theory involves asteroid strike. The article denotes that when they hit the ground of the earth, large soil and crushed rock will create crater on the surface. The debris will cause blocking of sunlight having the flora and fauna diminished. The lecturer, on the other hand, posits that they are no asteroid crater found on the date of mass extinction. She puts forth the idea that the crater that was revealed were dated 12 million years before the extinction of all the species.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2020-01-17 | nusybah | 80 | view |
| 2019-11-14 | M.S 2019 | 76 | view |
| 2019-10-24 | p0uya | 65 | view |
| 2019-10-24 | Seema Modak | 71 | view |
| 2019-10-08 | mahan vahab kashi | 80 | view |
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Grammar and spelling errors:
Line 5, column 338, Rule ID: THERE_RE_MANY[3]
Message: Possible agreement error. Did you mean 'periods'?
Suggestion: periods
... She suggests that there are only short period of volcanic activity at that time. More...
^^^^^^
Line 7, column 279, 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.
... having the flora and fauna diminished. The lecturer, on the other hand, posits tha...
^^^
Transition Words or Phrases used:
also, but, conversely, finally, first, furthermore, hence, however, if, moreover, second, secondly, so, then, thus, in addition, as a result, first of all, on the contrary, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 14.0 10.4613686534 134% => OK
Auxiliary verbs: 11.0 5.04856512141 218% => Less auxiliary verb wanted.
Conjunction : 9.0 7.30242825607 123% => OK
Relative clauses : 21.0 12.0772626932 174% => OK
Pronoun: 29.0 22.412803532 129% => Less pronouns wanted
Preposition: 47.0 30.3222958057 155% => 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: 1934.0 1373.03311258 141% => OK
No of words: 384.0 270.72406181 142% => Less content wanted.
Chars per words: 5.03645833333 5.08290768461 99% => OK
Fourth root words length: 4.4267276788 4.04702891845 109% => OK
Word Length SD: 2.48012389608 2.5805825403 96% => OK
Unique words: 196.0 145.348785872 135% => OK
Unique words percentage: 0.510416666667 0.540411800872 94% => More unique words wanted or less content wanted.
syllable_count: 589.5 419.366225166 141% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 5.0 3.25607064018 154% => OK
Article: 12.0 8.23620309051 146% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 3.0 2.5761589404 116% => OK
Performance on sentences:
How many sentences: 20.0 13.0662251656 153% => OK
Sentence length: 19.0 21.2450331126 89% => OK
Sentence length SD: 46.6091192794 49.2860985944 95% => OK
Chars per sentence: 96.7 110.228320801 88% => OK
Words per sentence: 19.2 21.698381199 88% => OK
Discourse Markers: 9.5 7.06452816374 134% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 2.0 4.19205298013 48% => OK
Sentences with positive sentiment : 5.0 4.33554083885 115% => OK
Sentences with negative sentiment : 10.0 4.45695364238 224% => Less negative sentences wanted.
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: 0.206163949625 0.272083759551 76% => OK
Sentence topic coherence: 0.0583916769167 0.0996497079465 59% => OK
Sentence topic coherence SD: 0.0889589795008 0.0662205650399 134% => OK
Paragraph topic coherence: 0.123104225613 0.162205337803 76% => OK
Paragraph topic coherence SD: 0.0460614390557 0.0443174109184 104% => OK
Essay readability:
automated_readability_index: 11.9 13.3589403974 89% => Automated_readability_index is low.
flesch_reading_ease: 60.65 53.8541721854 113% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 9.5 11.0289183223 86% => OK
coleman_liau_index: 11.95 12.2367328918 98% => OK
dale_chall_readability_score: 8.32 8.42419426049 99% => OK
difficult_words: 91.0 63.6247240618 143% => OK
linsear_write_formula: 10.5 10.7273730684 98% => OK
gunning_fog: 9.6 10.498013245 91% => OK
text_standard: 12.0 11.2008830022 107% => OK
What are above readability scores?
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Write the essay in 20 minutes.
Rates: 80.0 out of 100
Scores by essay e-grader: 24.0 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.