In recent years, many frog species around the world have declined in numbers or even gone extinct due to changes in their environment. These population declines and extinctions have serious consequences for the ecosystems in which frogs live; for example, frogs help play a role in protecting humans by eating disease-carrying insects. Several methods have been proposed to solve the problem of declining frog populations.
First, frogs are being harmed by pesticides, which are chemicals used to prevent insects from damaging farm crops such as corn and sugarcane. Pesticides often spread from farmland into neighboring frog habitats. Once pesticides enter a frog’s body, they attack the nervous system, leading to severe breathing problems. If laws prohibited the farmers from using harmful pesticides near sensitive frog populations, it would significantly reduce the harm pesticides cause to frogs.
A second major factor in frog population decline is a fungus that has spread around the world with deadly effect. The fungus causes thickening of the skin, and since frogs use their skin to absorb water, infected frogs die of dehydration. Recently, researchers have discovered several ways to treat or prevent infection, including antifungal medication and treatments that kill the fungus with heat. Those treatments, if applied on a large scale, would protect sensitive frog populations from infection.
Third, in a great many cases, frog populations are in decline simply because their natural habitats are threatened. Since most frog species lay their eggs in water, they are dependent on water and wetland habitats. Many such habitats are threatened by human activities, including excessive water use or the draining of wetlands to make them suitable for development. If key water habitats such as lakes and marshes were better protected from excessive water use and development, many frog species would recover.
Summarize the points made in the lecture, being sure to explain how they cast doubt on the specific methods proposed in the reading passage.
Changes in environment brings about the decrease of frog species and population, which will have bad impact on ecosystems where they are living. The author presents three solutions to the problem, all of which are considered ineffectively by the professor in the lecture.
First off, preventing farmers from using pesticides which is harmful to frogs is dismissed by the professor. Because farmers make a living with the crops, they may lose a large number of those when pesticides are not allowed to use. That is why the professor thinks it is not a practical way.
As for to protect frogs from being infected with fungus thickening their skin, the professor points out that it is too complex and difficult a work to finish. Since it is too large a scale and are so many generations.
Last, the professor does admit that frogs' habitats like lakes and marshes should be protected. Nevertheless, what destroys their habitats is not due to human activities, instead global warming is the most important reason. And that situation is not likely to change by eliminating water use and development.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2018-01-11 | tg763622253 | 90 | view |
| 2018-01-11 | tg763622253 | 90 | view |
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Grammar and spelling errors:
Line 3, column 170, Rule ID: LARGE_NUMBER_OF[1]
Message: Specify a number, remove phrase, or simply use 'many' or 'numerous'
Suggestion: many; numerous
... a living with the crops, they may lose a large number of those when pesticides are not allowed t...
^^^^^^^^^^^^^^^^^
Transition Words or Phrases used:
first, if, may, nevertheless, so, as for
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 15.0 10.4613686534 143% => OK
Auxiliary verbs: 3.0 5.04856512141 59% => OK
Conjunction : 6.0 7.30242825607 82% => OK
Relative clauses : 9.0 12.0772626932 75% => More relative clauses wanted.
Pronoun: 12.0 22.412803532 54% => OK
Preposition: 25.0 30.3222958057 82% => OK
Nominalization: 4.0 5.01324503311 80% => OK
Performance on vocabulary words:
No of characters: 920.0 1373.03311258 67% => OK
No of words: 183.0 270.72406181 68% => More content wanted.
Chars per words: 5.02732240437 5.08290768461 99% => OK
Fourth root words length: 3.67800887145 4.04702891845 91% => OK
Word Length SD: 2.76466011946 2.5805825403 107% => OK
Unique words: 118.0 145.348785872 81% => More unique words wanted.
Unique words percentage: 0.644808743169 0.540411800872 119% => OK
syllable_count: 280.8 419.366225166 67% => 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: 3.0 8.23620309051 36% => OK
Subordination: 3.0 1.25165562914 240% => Less adverbial clause wanted.
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 1.0 2.5761589404 39% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 10.0 13.0662251656 77% => Need more sentences. Double check the format of sentences, make sure there is a space between two sentences, or have enough periods. And also check the lengths of sentences, maybe they are too long.
Sentence length: 18.0 21.2450331126 85% => The Avg. Sentence Length is relatively short.
Sentence length SD: 32.2163002221 49.2860985944 65% => OK
Chars per sentence: 92.0 110.228320801 83% => OK
Words per sentence: 18.3 21.698381199 84% => OK
Discourse Markers: 4.0 7.06452816374 57% => More transition words/phrases wanted.
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 1.0 4.33554083885 23% => More positive sentences wanted.
Sentences with negative sentiment : 6.0 4.45695364238 135% => OK
Sentences with neutral sentiment: 3.0 4.27373068433 70% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.176554737322 0.272083759551 65% => OK
Sentence topic coherence: 0.0576641324022 0.0996497079465 58% => OK
Sentence topic coherence SD: 0.0489973897933 0.0662205650399 74% => OK
Paragraph topic coherence: 0.0968149590859 0.162205337803 60% => OK
Paragraph topic coherence SD: 0.0344310075135 0.0443174109184 78% => OK
Essay readability:
automated_readability_index: 11.4 13.3589403974 85% => Automated_readability_index is low.
flesch_reading_ease: 61.67 53.8541721854 115% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 9.1 11.0289183223 83% => OK
coleman_liau_index: 11.89 12.2367328918 97% => OK
dale_chall_readability_score: 8.67 8.42419426049 103% => OK
difficult_words: 48.0 63.6247240618 75% => More difficult words wanted.
linsear_write_formula: 8.5 10.7273730684 79% => OK
gunning_fog: 9.2 10.498013245 88% => OK
text_standard: 9.0 11.2008830022 80% => OK
What are above readability scores?
---------------------
Rates: 75.0 out of 100
Scores by essay e-grader: 22.5 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.