It is known that in recent years, industrial pollution has caused the Earth's ozone layer to thin, allowing an increase in the amount of ultraviolet radiation that reaches the Earth's surface. At the same time, scientists have discovered, the population of a species of salamander that lays its eggs in mountain lakes has declined. Since ultraviolet radiation is known to be damaging to delicate tissues and since salamander eggs have no protective shells, it must be the case that the increase in ultraviolet radiation has damaged many salamander eggs and prevented them from hatching. This process will no doubt cause population declines in other species, just as it has in the salamander species. - GRE Argument 92
In this argument the speaker claims that increased ultraviolet radiation due to thinning of the Earth's ozone layer is responsible for the significant decline in the number of salamanders who lay their eggs in mountain lakes, and that this thinning will cause population declines in other species. To justify these claims the speaker points out that salamander eggs lack a protective shell and thus their tissues are highly susceptible to radiation damage, then reasons that the increased radiation must damage these eggs and prevent them from hatching. The argument is problematic in several criti...
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Attribute Value Ideal
Score: 5.0 out of 6
Category: Very Good Excellent
No. of Grammatical Errors: 0 2
No. of Spelling Errors: 0 2
No. of Sentences: 21 15
No. of Words: 536 350
No. of Characters: 2812 1500
No. of Different Words: 215 200
Fourth Root of Number of Words: 4.812 4.7
Average Word Length: 5.246 4.6
Word Length SD: 2.871 2.4
No. of Words greater than 5 chars: 215 100
No. of Words greater than 6 chars: 182 80
No. of Words greater than 7 chars: 127 40
No. of Words greater than 8 chars: 94 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 25.524 21.0
Sentence Length SD: 10.693 7.5
Use of Discourse Markers (%): 0.667 0.12
Sentence-Text Coherence: 0.363 0.35
Sentence-Para Coherence: 0.578 0.50
Sentence-Sentence Coherence: 0.117 0.07
Number of Paragraphs: 6 5