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.
Based on the given materials, the article as well as the reading discuses the extinc animal called agnostid. Although the passage brings three theoris for the ways that how agnostids find their food, the lecture puts those hypothesizes under question. According to the professor's statement, unfortunately, all the reason mentioned in the passage have some fault information.
First of all, as illustrated by the article, the agnostids feed by hunting smaller animals. The orater; however, rebuts the expression by emphasing the fact that predatoes must have larg developed eye to see the pray and catch it. But, agnostids had small poorly developed eyes, so they were unable to hunt other animals. They could have been hunter, but, to be that they must have other features wich we still do noy know about it.
Second, as declared in the writing, they might have been seefloor dwellers because there are records of other elemetary arthropods that live the same way. Nonetheless, the speaker denies the claim by stating that the animals which live on the seefloor move very slowly. They occupying small areas which is not very larg. On the other hand as studies indicate, agnostides live in a multipla areas and it is hard for them to stay at one area.
Finally, the author indicates that Agonstides were parasites and were able to live on and feed off larger animals. This is because lots of todays arthropods all livig this way. Hence, this way in not counted as a useful suggestion because parasites population is not very large and they have to keep it in a certain amount; but, angostide's population is very larg and they conclude this due to the numerous fossils that antropologists found at different sites. Consequently this idea can not be accepted either.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2020-01-24 | jewel | 76 | view |
| 2020-01-03 | jason_linnil | 76 | view |
| 2019-12-20 | jewel | 80 | view |
| 2019-12-04 | shatealabo1110 | 70 | view |
| 2019-11-04 | p0uya | 85 | view |
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- Do you agree or disagree with the following statement? Movies and television have more negative effects than positive effects on the way young people behave. 90
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Grammar and spelling errors:
Line 1, column 271, Rule ID: POSSESIVE_APOSTROPHE[2]
Message: Possible typo: apostrophe is missing. Did you mean 'professors'' or 'professor's'?
Suggestion: professors'; professor's
...esizes under question. According to the professors statement, unfortunately, all the reaso...
^^^^^^^^^^
Line 5, column 389, Rule ID: POSSESIVE_APOSTROPHE[1]
Message: Possible typo: apostrophe is missing. Did you mean 'features'' or 'feature's'?
Suggestion: features'; feature's
...r, but, to be that they must have other features wich we still do noy know about it. ...
^^^^^^^^
Line 15, column 462, Rule ID: SENT_START_CONJUNCTIVE_LINKING_ADVERB_COMMA[1]
Message: Did you forget a comma after a conjunctive/linking adverb?
Suggestion: Consequently,
...ntropologists found at different sites. Consequently this idea can not be accepted either.
^^^^^^^^^^^^
Transition Words or Phrases used:
but, consequently, finally, first, hence, however, if, nonetheless, second, so, still, well, as well as, first of all, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 13.0 10.4613686534 124% => OK
Auxiliary verbs: 5.0 5.04856512141 99% => OK
Conjunction : 6.0 7.30242825607 82% => OK
Relative clauses : 9.0 12.0772626932 75% => More relative clauses wanted.
Pronoun: 27.0 22.412803532 120% => Less pronouns wanted
Preposition: 29.0 30.3222958057 96% => OK
Nominalization: 6.0 5.01324503311 120% => OK
Performance on vocabulary words:
No of characters: 1486.0 1373.03311258 108% => OK
No of words: 296.0 270.72406181 109% => OK
Chars per words: 5.02027027027 5.08290768461 99% => OK
Fourth root words length: 4.14784890444 4.04702891845 102% => OK
Word Length SD: 2.58650334302 2.5805825403 100% => OK
Unique words: 174.0 145.348785872 120% => OK
Unique words percentage: 0.587837837838 0.540411800872 109% => OK
syllable_count: 462.6 419.366225166 110% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 5.0 3.25607064018 154% => OK
Article: 6.0 8.23620309051 73% => OK
Subordination: 3.0 1.25165562914 240% => Less adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 3.0 2.5761589404 116% => OK
Performance on sentences:
How many sentences: 15.0 13.0662251656 115% => OK
Sentence length: 19.0 21.2450331126 89% => OK
Sentence length SD: 53.9639385763 49.2860985944 109% => OK
Chars per sentence: 99.0666666667 110.228320801 90% => OK
Words per sentence: 19.7333333333 21.698381199 91% => OK
Discourse Markers: 9.06666666667 7.06452816374 128% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 3.0 4.19205298013 72% => OK
Sentences with positive sentiment : 3.0 4.33554083885 69% => OK
Sentences with negative sentiment : 5.0 4.45695364238 112% => OK
Sentences with neutral sentiment: 7.0 4.27373068433 164% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.165655986028 0.272083759551 61% => OK
Sentence topic coherence: 0.0548010882864 0.0996497079465 55% => OK
Sentence topic coherence SD: 0.0376422709655 0.0662205650399 57% => OK
Paragraph topic coherence: 0.0923412979135 0.162205337803 57% => OK
Paragraph topic coherence SD: 0.0125634377651 0.0443174109184 28% => 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: 12.1 13.3589403974 91% => Automated_readability_index is low.
flesch_reading_ease: 52.19 53.8541721854 97% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 10.7 11.0289183223 97% => OK
coleman_liau_index: 11.84 12.2367328918 97% => OK
dale_chall_readability_score: 8.63 8.42419426049 102% => OK
difficult_words: 76.0 63.6247240618 119% => OK
linsear_write_formula: 8.5 10.7273730684 79% => OK
gunning_fog: 9.6 10.498013245 91% => OK
text_standard: 9.0 11.2008830022 80% => OK
What are above readability scores?
---------------------
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.