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.
Grammar and spelling errors:
Line 1, column 410, Rule ID: NUMEROUS_DIFFERENT[1]
Message: Use simply 'several'.
Suggestion: several
...tids ate or how they behaved. There are several different theories about how agnostids may have l...
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Transition Words or Phrases used:
first, however, if, may, second, so, third, well, while, such as
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 16.0 10.4613686534 153% => OK
Auxiliary verbs: 7.0 5.04856512141 139% => OK
Conjunction : 7.0 7.30242825607 96% => OK
Relative clauses : 11.0 12.0772626932 91% => OK
Pronoun: 21.0 22.412803532 94% => OK
Preposition: 27.0 30.3222958057 89% => OK
Nominalization: 1.0 5.01324503311 20% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1327.0 1373.03311258 97% => OK
No of words: 245.0 270.72406181 90% => More content wanted.
Chars per words: 5.41632653061 5.08290768461 107% => OK
Fourth root words length: 3.95632099841 4.04702891845 98% => OK
Word Length SD: 2.86225781219 2.5805825403 111% => OK
Unique words: 142.0 145.348785872 98% => OK
Unique words percentage: 0.579591836735 0.540411800872 107% => OK
syllable_count: 403.2 419.366225166 96% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 3.0 3.25607064018 92% => OK
Article: 3.0 8.23620309051 36% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 2.0 2.5761589404 78% => OK
Performance on sentences:
How many sentences: 13.0 13.0662251656 99% => OK
Sentence length: 18.0 21.2450331126 85% => The Avg. Sentence Length is relatively short.
Sentence length SD: 62.9690447102 49.2860985944 128% => OK
Chars per sentence: 102.076923077 110.228320801 93% => OK
Words per sentence: 18.8461538462 21.698381199 87% => OK
Discourse Markers: 4.92307692308 7.06452816374 70% => OK
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 3.0 4.33554083885 69% => OK
Sentences with negative sentiment : 1.0 4.45695364238 22% => More negative sentences wanted.
Sentences with neutral sentiment: 9.0 4.27373068433 211% => Less facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 1.0 0.272083759551 368% => The coherence between essay topic and essay body is overfitting.
Sentence topic coherence: 0.336800176407 0.0996497079465 338% => Sentence topic similarity is high.
Sentence topic coherence SD: 0.0972780425537 0.0662205650399 147% => OK
Paragraph topic coherence: 0.496583514299 0.162205337803 306% => Maybe some contents are duplicated.
Paragraph topic coherence SD: 0.196658885748 0.0443174109184 444% => More connections among paragraphs wanted.
Essay readability:
automated_readability_index: 13.5 13.3589403974 101% => OK
flesch_reading_ease: 53.21 53.8541721854 99% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 10.3 11.0289183223 93% => OK
coleman_liau_index: 14.16 12.2367328918 116% => OK
dale_chall_readability_score: 8.59 8.42419426049 102% => OK
difficult_words: 63.0 63.6247240618 99% => OK
linsear_write_formula: 6.5 10.7273730684 61% => OK
gunning_fog: 9.2 10.498013245 88% => OK
text_standard: 14.0 11.2008830022 125% => OK
What are above readability scores?
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Rates: 83.3333333333 out of 100
Scores by essay e-grader: 25.0 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.