Much archaeological evidence supports the widely held view that the first people to migrate to the American continent entered through a land bridge, which at one time joined Eastern Asia with North America. This land bridge, known as Beringia, was a wide expanse of terrain that emerged from the ocean as the sea levels dropped due to widespread glaciation at the time of the last Ice Age. Groups of humans could have slowly migrated across the grassy tundra of Beringia, feeding on herds of animals or coastal marine life. At the time, much of North America including what is now Canada, would have been covered with thick ice sheets making further movement southward a physical impossibility.
At a later period, the ice receded and humans would have been able to traverse an ice-free corridor in a southerly direction, and gradually settle the vast uninhabited continent. The ending of the Ice Age also caused the ocean levels to rise, thus submerging Beringia and isolating the new migrants from peoples on the Asian side. During the next centuries the descendants of the pioneers who crossed Beringia gradually peopled the entire landmass of the Americas. This view of the origins of the first Americans is often known as the Clovis-first theory (named after the site in New Mexico where stone artifacts made by these settlers were first found). Many subsequent finds of Clovis tools demonstrate this culture's extensive penetration throughout the continent.
The article states that first people to migrate in American conten came from Eastern Asia through Beringla - a land bridge that joined both the continents during ice age. However, the professor explains that the many remains found didn't tally with the clovis first theory and refutes to each of the author's reasons.
First, the article states that due to ice age the water level of ocean dropped and a terrain emerged from ocean, which served as bridge. But the professor refutes to this point by saying that the ice sheets at that time would have prevented them from migrating.
Second, the professor says that the clovis theory estimated the time of migration about 11000 to 13000 years ago. While the professor pointed that many archelogical remains were found which dated back 19000 years. And with this evidenvce it can inferred that prior to this time people would have migrated here. And archelogical remains dated back 15000 year ago were also found in South America. The later one highlights that it took century for people to migrate to South America.
Third, the professor says that many remains found were essentially matching with the tradition from pacific island and japan. And adding to it the DNA analysis, the professor here mentions that the report gives a new prospect to this theory and shows that siberian people would have migrated 40000 years back. And from this the professor concludes that numerous difference have been in the data and the validity of this theory is doubtfull.
Grammar and spelling errors:
Line 1, column 232, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: didn't
...or explains that the many remains found didnt tally with the clovis first theory and ...
^^^^^
Line 5, column 115, 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.
...gration about 11000 to 13000 years ago. While the professor pointed that many archelo...
^^^^^
Line 5, column 246, Rule ID: DID_BASEFORM[1]
Message: The verb 'can' requires the base form of the verb: 'infer'
Suggestion: infer
...0 years. And with this evidenvce it can inferred that prior to this time people would ha...
^^^^^^^^
Transition Words or Phrases used:
also, but, first, however, if, second, so, third, while
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 5.0 10.4613686534 48% => More to be verbs wanted.
Auxiliary verbs: 4.0 5.04856512141 79% => OK
Conjunction : 10.0 7.30242825607 137% => OK
Relative clauses : 16.0 12.0772626932 132% => OK
Pronoun: 24.0 22.412803532 107% => OK
Preposition: 30.0 30.3222958057 99% => OK
Nominalization: 3.0 5.01324503311 60% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1260.0 1373.03311258 92% => OK
No of words: 252.0 270.72406181 93% => More content wanted.
Chars per words: 5.0 5.08290768461 98% => OK
Fourth root words length: 3.98428260373 4.04702891845 98% => OK
Word Length SD: 2.22442221259 2.5805825403 86% => OK
Unique words: 135.0 145.348785872 93% => More unique words wanted.
Unique words percentage: 0.535714285714 0.540411800872 99% => OK
syllable_count: 375.3 419.366225166 89% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 0.0 3.25607064018 0% => OK
Article: 7.0 8.23620309051 85% => OK
Subordination: 1.0 1.25165562914 80% => 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: 21.0 21.2450331126 99% => OK
Sentence length SD: 30.0401351898 49.2860985944 61% => OK
Chars per sentence: 105.0 110.228320801 95% => OK
Words per sentence: 21.0 21.698381199 97% => OK
Discourse Markers: 4.58333333333 7.06452816374 65% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 3.0 4.19205298013 72% => OK
Sentences with positive sentiment : 2.0 4.33554083885 46% => More positive sentences wanted.
Sentences with negative sentiment : 0.0 4.45695364238 0% => More negative sentences wanted.
Sentences with neutral sentiment: 10.0 4.27373068433 234% => Less facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.199688488502 0.272083759551 73% => OK
Sentence topic coherence: 0.0766455433812 0.0996497079465 77% => OK
Sentence topic coherence SD: 0.062759072876 0.0662205650399 95% => OK
Paragraph topic coherence: 0.125922731743 0.162205337803 78% => OK
Paragraph topic coherence SD: 0.051834597891 0.0443174109184 117% => OK
Essay readability:
automated_readability_index: 12.6 13.3589403974 94% => Automated_readability_index is low.
flesch_reading_ease: 58.62 53.8541721854 109% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 10.3 11.0289183223 93% => OK
coleman_liau_index: 11.72 12.2367328918 96% => OK
dale_chall_readability_score: 8.25 8.42419426049 98% => OK
difficult_words: 57.0 63.6247240618 90% => OK
linsear_write_formula: 13.0 10.7273730684 121% => OK
gunning_fog: 10.4 10.498013245 99% => OK
text_standard: 13.0 11.2008830022 116% => OK
What are above readability scores?
---------------------
Rates: 75.0 out of 100
Scores by essay e-grader: 22.5 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.