Agnostids were a group of marine animals that became extinct about 450 million years ago. Agnostid fossils can be found in rocks in many areas around the world. From the fossil remains, we know that agnostids were primitive arthropods-relatives of modern-day insects. However, the fossil information does not allow paleontologists to determine with certainty what agnostids ate or how they behaved. There are several different theories about how agnostids may have lived.
Free-Swimming Predators
First, the agnostids may have been free-swimming predators that hunted smaller animals. It is known that other types of primitive arthropods were strong swimmers and active predators, so it is reasonable that the agnostids may have lived that way as well And while the agnostids were small, sometimes just six millimeters long, there were plenty of smaller organisms in the ancient ocean for them to prey on.
Seafloor Dwellers
Second, they may have dwelled on the seafloor. Again, there are examples of other types of primitive arthropods living this way, so it is possible that agnostids did too. On the seafloor they would have survived by scavenging dead organisms or by grazing on bacteria.
Parasites
Third, there is the possibility that the agnostids were parasites, living on and feeding off larger organisms. One reason that this seems possible is that there are many species of modern-day arthropods that exist as parasites, such as fleas, ticks, and mites. The agnostids might have lived on primitive fish or even on other, larger arthropods.
Recently, there has been a plethora of debate on Agnostids' life habitant. There are not much information to allow paleontologists to determine with certainty what their food regimes or their bahaviour. More specifically, in regard to the passage, the writer puts forth the idea that there are several different theories about agnostids habitants. In the listening passage, the lecturer is quick to point out that there are some serious flaws in the writer's claims. In fact, the professor believes none of the theories are based on facts that has been founded about agnostids and addresses, in detail, the trouble with each point made in the reading text.
First and foremost, the author of the article states agnotids may have been free-swimming predators.The writer goes on explaining that because primitive arthropods were active predators, so it is rational the agnotids may have lived that way too. Some professionals in the same field, however, stand in firm opposition to this claim. In the listening, for instance, the professor state it is neccessary for predator spieces to have large eyes and organs that could help them to see and follow their food. She goes on to say that not also agnostids did not have eyes and were actually blind, but also, agnostids did not have suitable organs for hunting.
One group of scholars, represented by the writer, thinks agnostids may have live on the seefloor and come with the idea that they would have survived by eating dead organisms or by grazing on bacteria. Of course, though, not all the experts in the field believe this is accurate. Again, the speaker specifically addresses this point when she points out that see floor animals are very slow and they usually remain in the same area but agnostids are fast animals and their remaining are in a very vast area of the ocean.
Finally, the author brings his argument to a close by suggesting that there is a possibility that these creatures were parasites and they might have lived on other creatures. Not surprisingly, the lecturer takes issue with this claim by contending that parasite's population is not large and they are feeded from the host animals, although, there are vast and diversed amount of agnostids fossils that indicate their population were large.
To sum up, both the essayist and the professor hold conflicting views about how agnostids lived. It is clear that they will have trouble finding common ground on this issue.
| Post date | Users | Rates | Link to Content |
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| 2023-09-05 | YasamanEsml | 86 | view |
| 2023-06-19 | Vivian Chang | 76 | view |
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Grammar and spelling errors:
Line 1, column 294, Rule ID: NUMEROUS_DIFFERENT[1]
Message: Use simply 'several'.
Suggestion: several
...iter puts forth the idea that there are several different theories about agnostids habitants. In ...
^^^^^^^^^^^^^^^^^
Line 3, column 101, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: The
...s may have been free-swimming predators.The writer goes on explaining that because ...
^^^
Line 7, column 254, Rule ID: POSSESIVE_APOSTROPHE[1]
Message: Possible typo: apostrophe is missing. Did you mean 'parasites'' or 'parasite's'?
Suggestion: parasites'; parasite's
...ssue with this claim by contending that parasites population is not large and they are fe...
^^^^^^^^^
Line 7, column 369, Rule ID: THERE_RE_MANY[3]
Message: Possible agreement error. Did you mean 'amounts'?
Suggestion: amounts
..., although, there are vast and diversed amount of agnostids fossils that indicate thei...
^^^^^^
Transition Words or Phrases used:
actually, also, but, finally, first, however, if, may, so, for instance, in fact, of course, in regard to, to sum up
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 23.0 10.4613686534 220% => Less to be verbs wanted.
Auxiliary verbs: 7.0 5.04856512141 139% => OK
Conjunction : 16.0 7.30242825607 219% => Less conjunction wanted
Relative clauses : 15.0 12.0772626932 124% => OK
Pronoun: 37.0 22.412803532 165% => Less pronouns wanted
Preposition: 52.0 30.3222958057 171% => OK
Nominalization: 6.0 5.01324503311 120% => OK
Performance on vocabulary words:
No of characters: 2049.0 1373.03311258 149% => OK
No of words: 408.0 270.72406181 151% => Less content wanted.
Chars per words: 5.02205882353 5.08290768461 99% => OK
Fourth root words length: 4.49433085973 4.04702891845 111% => OK
Word Length SD: 2.60978546089 2.5805825403 101% => OK
Unique words: 215.0 145.348785872 148% => OK
Unique words percentage: 0.526960784314 0.540411800872 98% => OK
syllable_count: 629.1 419.366225166 150% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 3.25607064018 61% => OK
Article: 10.0 8.23620309051 121% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 7.0 2.5761589404 272% => Less preposition wanted as sentence beginnings.
Performance on sentences:
How many sentences: 16.0 13.0662251656 122% => OK
Sentence length: 25.0 21.2450331126 118% => OK
Sentence length SD: 61.4277713559 49.2860985944 125% => OK
Chars per sentence: 128.0625 110.228320801 116% => OK
Words per sentence: 25.5 21.698381199 118% => OK
Discourse Markers: 7.25 7.06452816374 103% => OK
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 4.0 4.19205298013 95% => OK
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 7.0 4.45695364238 157% => 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: 0.194443485067 0.272083759551 71% => OK
Sentence topic coherence: 0.0576294000492 0.0996497079465 58% => OK
Sentence topic coherence SD: 0.0511316436678 0.0662205650399 77% => OK
Paragraph topic coherence: 0.103918929124 0.162205337803 64% => OK
Paragraph topic coherence SD: 0.0210160484768 0.0443174109184 47% => Paragraphs are similar to each other. Some content may get duplicated or it is not exactly right on the topic.
Essay readability:
automated_readability_index: 15.0 13.3589403974 112% => OK
flesch_reading_ease: 54.56 53.8541721854 101% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 11.9 11.0289183223 108% => OK
coleman_liau_index: 12.13 12.2367328918 99% => OK
dale_chall_readability_score: 8.55 8.42419426049 101% => OK
difficult_words: 95.0 63.6247240618 149% => OK
linsear_write_formula: 10.5 10.7273730684 98% => OK
gunning_fog: 12.0 10.498013245 114% => 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.