Earth today faces crisis more severe than it ever has before. Each year more than 5000 species go extinct, including animals, plants and microorganisms. Although human activity is one among the many reasons that cause extinction, I strongly disagree with the speaker. It is understandable that one may concern about the money and labor we need to devote to such big project, but I hold that man should take every initiative to save speicies that are in danger, because saving endangered species is ultimately saving oursleves.
Because the ecosystem of earth is a complex whole that depend on different species to maintain balance, the vanishing of some species would interupt the balance and put our own health in risk. Even vocanic eruption or natural fire is what put species in danger, for the sake of preserving a suitable living environment, we should make the best effort to save them. Our life rely on healthy forest, clean water and unpolluted atomosphere. If pines disappear, we lose a significant proportion of forests, which originally generate oxygen that sustains our life. Food chains would be altered and even cut off, consequently it would trigger more species to vanish, and ultimately interrupt the entire ecosystem. Human may not be the criminal for some species' death, but to let the situation of extinction continue is to commit our own suicides.
Besides, many plants provide the cures for human diseases that are hard to treat with. Since our scientists have only studied 5 percent of the entire plant species, to leave the rest of plants unprotected may greatly decrease our chances of finding cures for diseases. A chemical found in a plant called sweet wormwood has been identified as the cure for malaria, which has troubled human beings for centuries. Herbs have incredible effect for treating mental disorder. As thousands of plant species go extinct every day, we may be losing the panacea for AIDS, cancer and heart disease.
Although people might reject our opinion and claim that according to natural selection, the species that are in danger prove themselves to be weak, therefore do not deserve protection. I still think that this claim is biased and impractical. For how far are we humans from our extinction? If natural selection theories suggest that humans are weak, small and esay to be crashed, should we just let that happen?
From a practical perspective, to save endangered species that end up where they are at due to natural causes is recommended. Because to save them is to save oursleves, and to let them vanish is to let ourselves vanish.
Grammar and spelling errors:
Line 3, column 620, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
...e altered and even cut off, consequently it would trigger more species to vanish,...
Line 9, column 220, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
...them vanish is to let ourselves vanish.
Transition Words or Phrases used:
besides, but, consequently, if, may, so, still, therefore
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 22.0 19.5258426966 113% => OK
Auxiliary verbs: 12.0 12.4196629213 97% => OK
Conjunction : 14.0 14.8657303371 94% => OK
Relative clauses : 16.0 11.3162921348 141% => OK
Pronoun: 40.0 33.0505617978 121% => Less pronouns wanted
Preposition: 46.0 58.6224719101 78% => OK
Nominalization: 12.0 12.9106741573 93% => OK
Performance on vocabulary words:
No of characters: 2176.0 2235.4752809 97% => OK
No of words: 431.0 442.535393258 97% => OK
Chars per words: 5.04872389791 5.05705443957 100% => OK
Fourth root words length: 4.55637350225 4.55969084622 100% => OK
Word Length SD: 2.66061664425 2.79657885939 95% => OK
Unique words: 248.0 215.323595506 115% => OK
Unique words percentage: 0.575406032483 0.4932671777 117% => OK
syllable_count: 674.1 704.065955056 96% => OK
avg_syllables_per_word: 1.6 1.59117977528 101% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 7.0 6.24550561798 112% => OK
Article: 3.0 4.99550561798 60% => OK
Subordination: 9.0 3.10617977528 290% => Less adverbial clause wanted.
Conjunction: 4.0 1.77640449438 225% => Less conjunction wanted as sentence beginning.
Preposition: 4.0 4.38483146067 91% => OK
Performance on sentences:
How many sentences: 21.0 20.2370786517 104% => OK
Sentence length: 20.0 23.0359550562 87% => OK
Sentence length SD: 52.542305598 60.3974514979 87% => OK
Chars per sentence: 103.619047619 118.986275619 87% => OK
Words per sentence: 20.5238095238 23.4991977007 87% => OK
Discourse Markers: 2.71428571429 5.21951772744 52% => More transition words/phrases wanted.
Paragraphs: 5.0 4.97078651685 101% => OK
Language errors: 2.0 7.80617977528 26% => OK
Sentences with positive sentiment : 7.0 10.2758426966 68% => OK
Sentences with negative sentiment : 11.0 5.13820224719 214% => Less negative sentences wanted.
Sentences with neutral sentiment: 3.0 4.83258426966 62% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.251498464242 0.243740707755 103% => OK
Sentence topic coherence: 0.069518976778 0.0831039109588 84% => OK
Sentence topic coherence SD: 0.0594091597283 0.0758088955206 78% => OK
Paragraph topic coherence: 0.140721634639 0.150359130593 94% => OK
Paragraph topic coherence SD: 0.0481058601458 0.0667264976115 72% => OK
automated_readability_index: 12.6 14.1392134831 89% => Automated_readability_index is low.
flesch_reading_ease: 51.18 48.8420337079 105% => OK
smog_index: 8.8 7.92365168539 111% => OK
flesch_kincaid_grade: 11.1 12.1743820225 91% => OK
coleman_liau_index: 12.01 12.1639044944 99% => OK
dale_chall_readability_score: 9.32 8.38706741573 111% => OK
difficult_words: 128.0 100.480337079 127% => OK
linsear_write_formula: 11.5 11.8971910112 97% => OK
gunning_fog: 10.0 11.2143820225 89% => OK
text_standard: 12.0 11.7820224719 102% => OK
What are above readability scores?
Rates: 70.83 out of 100
Scores by essay e-grader: 4.25 Out of 6
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.