Like many creatures, humpback whales migrate long distances for feeding and mating purposes. How animals manage to migrate long distances is often puzzling. In the case of humpback whales, we may have found the answer: they may be navigating by the stars, much as early human sailors did. What we know about humpback whales makes this a distinct possibility.
First, humpback whales seem to be intelligent enough to use stars to navigate by. Whales' brains have a high degree of complexity'a common determiner of intelligence. This suggests that the whales' brain power far exceeds that of most other animals. The whales' well-developed cognitive ability seems to provide a sound basis for the ability to use a complex, abstract system of sensory stimuli such as the night sky for orientation.
Second, humpback whales migrate in straight lines. Animals can maintain movement in a straight direction for long distances only if they orient themselves by some external objects or forces. Many birds and other terrestrial creatures, for example, use physical landmarks to help them stay on track as they migrate. Whales, which swim in the open ocean, cannot rely on land features; they could, however, rely on stars at night to provide them with external signs by which to maintain direction over long distances.
Third, humpback whales exhibit an unusual behavior: they are sometimes observed floating straight up for minutes at a time, their heads above the water as though they were looking upward. The behavior is known as spy-hopping, and it is very rare among marine animals. One explanation for the function of spy-hopping is that the whales are looking at the stars, which are providing them with information to navigate by.
The reading passage suggests different probable reasons due to which humpback whales can cover great distances by navigating the stars. However, the lecture did not agree with the concepts and therefore provide certain antagonistic ideas to the mentioned ones.
The very first thing the lecture told is that the overall complexity of the brains of the humpback whales might not be associated with their intelligence in navigating the stars for their journey. Giving reasons the lecturer provided examples of birds which usually do have a certain level of highly complex brain system yet they do not have the ability to understand the navigation of such a perplexed night sky orientation. Because of this the lecturer casted doubt on the concept that only having a merely more complex sensory stimuli than the other animals will necessary make the humpback whales more cognitively sound to comprehend the star orientation to serve their purpose.
Second of all, it is said in the reading passage that the humpback whales depend on the night stars as external sign to orient their bodies to remain straight on the track. However, the lecture did not show coherence with the idea as the whales have inbuild magnetic properties which make them vulnerable to the earth's magnetic field. As a result, there is a good chance that the humpback whales get straightened to their tracks by the help of the magnetic field, not by any external forces or objects.
The last contradictions the lecturer in the lecture put forward is that the only doing spy-hopping can not make sure that the humpback whales are following the stars. For his case, he has provided the same case of some sharks which actually do spy-hopping like the humpback whales. However, they do not do navigation purposes rather they do it out of their default characteristics. That is why it can not be eliminated the fact that the humpback whales do the same thing for the same purpose and not for navigation purposes.
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Comments
Essay evaluations by e-grader
Grammar and spelling errors:
Line 2, column 426, Rule ID: SENTENCE_FRAGMENT[1]
Message: “Because” 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.
...such a perplexed night sky orientation. Because of this the lecturer casted doubt on th...
^^^^^^^
Transition Words or Phrases used:
actually, first, however, if, second, so, therefore, as to, as a result
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 8.0 10.4613686534 76% => OK
Auxiliary verbs: 5.0 5.04856512141 99% => OK
Conjunction : 4.0 7.30242825607 55% => More conjunction wanted.
Relative clauses : 12.0 12.0772626932 99% => OK
Pronoun: 24.0 22.412803532 107% => OK
Preposition: 32.0 30.3222958057 106% => OK
Nominalization: 7.0 5.01324503311 140% => OK
Performance on vocabulary words:
No of characters: 1649.0 1373.03311258 120% => OK
No of words: 331.0 270.72406181 122% => OK
Chars per words: 4.98187311178 5.08290768461 98% => OK
Fourth root words length: 4.26537283232 4.04702891845 105% => OK
Word Length SD: 2.62535156902 2.5805825403 102% => OK
Unique words: 168.0 145.348785872 116% => OK
Unique words percentage: 0.507552870091 0.540411800872 94% => More unique words wanted or less content wanted.
syllable_count: 506.7 419.366225166 121% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 4.0 3.25607064018 123% => OK
Article: 5.0 8.23620309051 61% => OK
Subordination: 2.0 1.25165562914 160% => 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: 12.0 13.0662251656 92% => OK
Sentence length: 27.0 21.2450331126 127% => The Avg. Sentence Length is relatively long.
Sentence length SD: 44.0782133133 49.2860985944 89% => OK
Chars per sentence: 137.416666667 110.228320801 125% => OK
Words per sentence: 27.5833333333 21.698381199 127% => OK
Discourse Markers: 5.91666666667 7.06452816374 84% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 6.0 4.33554083885 138% => OK
Sentences with negative sentiment : 4.0 4.45695364238 90% => OK
Sentences with neutral sentiment: 2.0 4.27373068433 47% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.22926000326 0.272083759551 84% => OK
Sentence topic coherence: 0.0938603287834 0.0996497079465 94% => OK
Sentence topic coherence SD: 0.0476378523425 0.0662205650399 72% => OK
Paragraph topic coherence: 0.138942939086 0.162205337803 86% => OK
Paragraph topic coherence SD: 0.0287937385223 0.0443174109184 65% => OK
Essay readability:
automated_readability_index: 15.8 13.3589403974 118% => OK
flesch_reading_ease: 52.53 53.8541721854 98% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 12.6 11.0289183223 114% => OK
coleman_liau_index: 11.9 12.2367328918 97% => OK
dale_chall_readability_score: 8.22 8.42419426049 98% => OK
difficult_words: 68.0 63.6247240618 107% => OK
linsear_write_formula: 14.5 10.7273730684 135% => OK
gunning_fog: 12.8 10.498013245 122% => OK
text_standard: 13.0 11.2008830022 116% => OK
What are above readability scores?
---------------------
Write the essay in 20 minutes.
Rates: 80.0 out of 100
Scores by essay e-grader: 24.0 Out of 30
---------------------
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.
Grammar and spelling errors:
Line 2, column 426, Rule ID: SENTENCE_FRAGMENT[1]
Message: “Because” 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.
...such a perplexed night sky orientation. Because of this the lecturer casted doubt on th...
^^^^^^^
Transition Words or Phrases used:
actually, first, however, if, second, so, therefore, as to, as a result
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 8.0 10.4613686534 76% => OK
Auxiliary verbs: 5.0 5.04856512141 99% => OK
Conjunction : 4.0 7.30242825607 55% => More conjunction wanted.
Relative clauses : 12.0 12.0772626932 99% => OK
Pronoun: 24.0 22.412803532 107% => OK
Preposition: 32.0 30.3222958057 106% => OK
Nominalization: 7.0 5.01324503311 140% => OK
Performance on vocabulary words:
No of characters: 1649.0 1373.03311258 120% => OK
No of words: 331.0 270.72406181 122% => OK
Chars per words: 4.98187311178 5.08290768461 98% => OK
Fourth root words length: 4.26537283232 4.04702891845 105% => OK
Word Length SD: 2.62535156902 2.5805825403 102% => OK
Unique words: 168.0 145.348785872 116% => OK
Unique words percentage: 0.507552870091 0.540411800872 94% => More unique words wanted or less content wanted.
syllable_count: 506.7 419.366225166 121% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 4.0 3.25607064018 123% => OK
Article: 5.0 8.23620309051 61% => OK
Subordination: 2.0 1.25165562914 160% => 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: 12.0 13.0662251656 92% => OK
Sentence length: 27.0 21.2450331126 127% => The Avg. Sentence Length is relatively long.
Sentence length SD: 44.0782133133 49.2860985944 89% => OK
Chars per sentence: 137.416666667 110.228320801 125% => OK
Words per sentence: 27.5833333333 21.698381199 127% => OK
Discourse Markers: 5.91666666667 7.06452816374 84% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 6.0 4.33554083885 138% => OK
Sentences with negative sentiment : 4.0 4.45695364238 90% => OK
Sentences with neutral sentiment: 2.0 4.27373068433 47% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.22926000326 0.272083759551 84% => OK
Sentence topic coherence: 0.0938603287834 0.0996497079465 94% => OK
Sentence topic coherence SD: 0.0476378523425 0.0662205650399 72% => OK
Paragraph topic coherence: 0.138942939086 0.162205337803 86% => OK
Paragraph topic coherence SD: 0.0287937385223 0.0443174109184 65% => OK
Essay readability:
automated_readability_index: 15.8 13.3589403974 118% => OK
flesch_reading_ease: 52.53 53.8541721854 98% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 12.6 11.0289183223 114% => OK
coleman_liau_index: 11.9 12.2367328918 97% => OK
dale_chall_readability_score: 8.22 8.42419426049 98% => OK
difficult_words: 68.0 63.6247240618 107% => OK
linsear_write_formula: 14.5 10.7273730684 135% => OK
gunning_fog: 12.8 10.498013245 122% => OK
text_standard: 13.0 11.2008830022 116% => OK
What are above readability scores?
---------------------
Write the essay in 20 minutes.
Rates: 80.0 out of 100
Scores by essay e-grader: 24.0 Out of 30
---------------------
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.