Although dinosaurs are considered as the strongest creatures that have ever lived on Earth, they were not strong enough to defy extinction. Since there are no definite data that could identify the cause of extinction, many theories have been suggested. These three theories are the most convincing ones.
The first hypothesis is the asteroid theory. This theory gained support from the discovery of an element called "Iridium," which was extracted from a layer of rock. Iridium is a rare element on Earth. In contrast, it is commonly found in meteorites. This led scientists to claim that iridium was scattered widely when a giant asteroid hit the Earth during the time dinosaurs were alive.
The second hypothesis is the ice age theory. It is well known that the glacial period comes every 20,000~40,000 years on Earth. Supporters of this theory say that the glacial period adversely affected nature and influenced the lives of dinosaurs. As many dinosaurs were not equipped with strong thermoregulatory systems, they were vulnerable to extreme weather conditions.
The third hypothesis is the bird evolution theory. Some people argue that dinosaurs evolved into modern birds that we are now familiar with. When researchers compared the body structures of contemporary birds to those of dinosaurs, their characteristics showed striking similarities. Many anatomical features of modern birds, including their skeletons, hearts, and lungs, show high complexity similar to those of dinosaurs.
The dinosaurs were considered as a strongest creatures on earth but were extinct. Many theory has been put forth for the extinction of dinosaurs. The passage explains the three theories while the lecturer points out flaws in this theories.
The first theory mentioned in passage is the asteroid theory. It suggest that dinosaur were extinct due to a giant asteroid hit the earth because Iridium was extracted from earth's surface. Iridium was a rare element on Earth and also found in abundance in meteorites, so it is believed that it might be due to an asteroid hitting the Earth. While the lecturer opposes it by stating that Earth's core is rich in Iridium. Also, he thinks that the inner core of Earth contains magma and due to its eruption, it thrown out Iridium. So, he thinks iridium was found due to eruption rather than mete
The second theory mentioned in the passage is Ice Age theory. According to this theory, the glacial period affected adversely on the nature and lives of the dinosaur as they were not equipped with the thermoregulatory system. The lecturer finds this theory unconvincing. He thinks that the climate before was very hot. Also, ice caps at north and south pole would have submerged due to high sea levels in past. So, the glacial period is a root cause for the extinction of species according to the lecturer.
Bird theory is the last theory proposed in the passage. According to this theory, people believe that dinosaurs are evolved into birds due to fact that many characteristics are similar of modern birds to that of dinosaurs. But, the lecturer thinks that if dinosaurs are similar to birds, they might have survived the extinction by flying away. The lecturer thinks that dinosaur has a limited range of movement which is not common to modern birds. Hence, this theory is also not reliable.
Hence, the passage mentions three theories about the possible extinction of dinosaurs which the lecturer opposes by providing convincing facts and evidence.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2021-04-19 | SaC | 61 | view |
| 2022-12-14 | amchoi0810 | 80 | view |
| 2022-12-14 | amchoi0810 | 80 | view |
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Grammar and spelling errors:
Line 1, column 34, Rule ID: THE_SUPERLATIVE[1]
Message: Use 'the' with the superlative.
Suggestion: the
The dinosaurs were considered as a strongest creatures on earth but were e...
^
Line 1, column 83, Rule ID: MANY_NN[1]
Message: Possible agreement error. The noun theory seems to be countable; consider using: 'Many theories'.
Suggestion: Many theories
...st creatures on earth but were extinct. Many theory has been put forth for the extinction o...
^^^^^^^^^^^
Line 1, column 226, Rule ID: THIS_NNS[1]
Message: Did you mean 'these'?
Suggestion: these
... while the lecturer points out flaws in this theories. The first theory mentioned i...
^^^^
Line 2, column 65, Rule ID: IT_VBZ[1]
Message: Did you mean 'suggests'?
Suggestion: suggests
...d in passage is the asteroid theory. It suggest that dinosaur were extinct due to a gia...
^^^^^^^
Line 2, column 341, Rule ID: SENTENCE_FRAGMENT[1]
Message: “While” at the beginning of a sentence requires a 2nd clause. Maybe a comma, question or exclamation mark is missing, or the sentence is incomplete and should be joined with the following sentence.
...e due to an asteroid hitting the Earth. While the lecturer opposes it by stating that...
^^^^^
Line 3, column 403, Rule ID: IN_PAST[1]
Message: Did you mean: 'in the past'?
Suggestion: in the past
...d have submerged due to high sea levels in past. So, the glacial period is a root cause...
^^^^^^^
Transition Words or Phrases used:
also, but, first, hence, if, second, so, while
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 21.0 10.4613686534 201% => Less to be verbs wanted.
Auxiliary verbs: 3.0 5.04856512141 59% => OK
Conjunction : 6.0 7.30242825607 82% => OK
Relative clauses : 12.0 12.0772626932 99% => OK
Pronoun: 26.0 22.412803532 116% => OK
Preposition: 43.0 30.3222958057 142% => OK
Nominalization: 10.0 5.01324503311 199% => OK
Performance on vocabulary words:
No of characters: 1656.0 1373.03311258 121% => OK
No of words: 336.0 270.72406181 124% => OK
Chars per words: 4.92857142857 5.08290768461 97% => OK
Fourth root words length: 4.28139028586 4.04702891845 106% => OK
Word Length SD: 2.54773030465 2.5805825403 99% => OK
Unique words: 163.0 145.348785872 112% => OK
Unique words percentage: 0.485119047619 0.540411800872 90% => More unique words wanted or less content wanted.
syllable_count: 510.3 419.366225166 122% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 7.0 3.25607064018 215% => Less pronouns wanted as sentence beginning.
Article: 10.0 8.23620309051 121% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 2.0 2.5761589404 78% => OK
Performance on sentences:
How many sentences: 20.0 13.0662251656 153% => OK
Sentence length: 16.0 21.2450331126 75% => The Avg. Sentence Length is relatively short.
Sentence length SD: 39.6003472207 49.2860985944 80% => OK
Chars per sentence: 82.8 110.228320801 75% => OK
Words per sentence: 16.8 21.698381199 77% => OK
Discourse Markers: 2.3 7.06452816374 33% => More transition words/phrases wanted.
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 6.0 4.19205298013 143% => OK
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 2.0 4.45695364238 45% => More negative sentences wanted.
Sentences with neutral sentiment: 14.0 4.27373068433 328% => Less facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.244682998996 0.272083759551 90% => OK
Sentence topic coherence: 0.0832612036519 0.0996497079465 84% => OK
Sentence topic coherence SD: 0.086862444524 0.0662205650399 131% => OK
Paragraph topic coherence: 0.153385086131 0.162205337803 95% => OK
Paragraph topic coherence SD: 0.0769000446452 0.0443174109184 174% => OK
Essay readability:
automated_readability_index: 10.2 13.3589403974 76% => Automated_readability_index is low.
flesch_reading_ease: 63.7 53.8541721854 118% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 8.4 11.0289183223 76% => OK
coleman_liau_index: 11.02 12.2367328918 90% => OK
dale_chall_readability_score: 7.81 8.42419426049 93% => OK
difficult_words: 72.0 63.6247240618 113% => OK
linsear_write_formula: 7.5 10.7273730684 70% => OK
gunning_fog: 8.4 10.498013245 80% => OK
text_standard: 8.0 11.2008830022 71% => OK
What are above readability scores?
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Write the essay in 20 minutes.
Rates: 73.3333333333 out of 100
Scores by essay e-grader: 22.0 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.