The little ice age was a period of unusually cold temperature in many parts of the world that lasted from about the year 1350 until 1900CE. There were unusually harsh winters, and glaciers grew larger in many areas. Scientist have long wondered what caused the Little Ice Age. Several possible causes have been proposed.
First, the cooling may have been caused by disrupting of ocean currents. Before the Little Ice Age, there was a period of unusually warm weather during which glaciers melted. These melted glaciers sent a large amount of cold freshwater into the Gulf Stream, a large ocean current that strongly affects Earth's climate. Some scientists believe that this freshwater was enough to temporarily disrupt the Gulf Stream. Such a disruption could have caused the Little Ice Age.
Second, volcanic eruption could have caused the Little Ice Age. When volcanoes erupt, they send dark clouds of dust and sulfur gas into the atmosphere. These clouds, which can spread over great areas, block some sunlight from reaching Earth's surface. This can decrease the global temperatures. Scientists know of several volcanic eruption that took place during the Little Ice Age.
Third, substantial decreases in human populations may have contributed indirectly to the cooling of the climate. For a variety of reason(disease, warfare, social disruption), the human population just before the Little Ice Age and during the early part of it was lower than it had been in a long time. Forest trees started growing on fields that were no longer used for agriculture. Since trees absorb carbon dioxide, a greenhouse gas, they decrease the greenhouse effect that keeps Earth warm. With more forest trees carbon dioxide, earth became cooler.
According to the lecturer and the reading passage there are several positive point about little ice agree and several negative points about little ice age. The lecturer explains that the reasons of cold temperature are not matching with the reasons that mentioned in reading passage. However, reading passage contends that those reasons are the main cause of cold temperature.
The first point that the lecturer makes is that glaciers occurs only in some area.
According to the professor, glaciers will cause cooling only in Europe and North
America, while little ice age affect southern, New Zealand. He mentioned that those causes cannot be explained. This point from the lecturer contrasts with the reading because the reading only says that the cooling may have been caused by disrupting of ocean currents. Before the Little Ice Age, there was a period of unusually warm weather during which glaciers melted.
Another point that the lecturer uses to cast doubt on the reading that volcanic may lead to dust in the atmosphere. The lecturer claims that large amount of volcanic will produce visual effect that peoples can see it. For example,
there will be colorful sunset, grey or brown snow instead of white. It's seems that volcanic was not large enough to produce dust that lead to lower the temperature. However, the reading only states that When volcanoes erupt, they send dark clouds of dust and sulfur gas into the atmosphere.
Finally, the professor stated that, on the contrary of the reading, about forest stooped warming greenhouse effect by removing carbon dioxide. In other words, there was not enough time to this effect to work. The human population grew quickly which mean forest cut down to clear the surrounding field and feed population, forest that mentioned were not long enough to cause cooling of climate. This contradicts the final idea of the reading passage because it only says that
with more forest trees carbon dioxide, earth became cooler. And human populations may have contributed indirectly to the cooling of the climate.
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little ice agree
little ice age
are not matching with the reasons that mentioned in reading passage.
are not matching with the reasons that are mentioned in reading passage.
are not matching with the reasons mentioned in reading passage.
The human population grew quickly which mean forest cut down to clear the surrounding field
The human population grew quickly which means forests are cut down to clear the surrounding field
forest that mentioned were not long enough to cause cooling of climate.
forests that are mentioned were not long enough to cause cooling of climate.
forests mentioned were not long enough to cause cooling of climate.
Sentence: This contradicts the final idea of the reading passage because it only says that with more forest trees carbon dioxide, earth became cooler.
Description: A noun, plural, common is not usually followed by a noun, singular, common
Suggestion: Refer to trees and carbon
flaws:
No. of Grammatical Errors: 5 2
No. of Words: 337 250
Write the essay in 20 minutes.
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Attribute Value Ideal
Score: 21 in 30
Category: Good Excellent
No. of Grammatical Errors: 5 2
No. of Spelling Errors: 0 2
No. of Sentences: 18 12
No. of Words: 337 250
No. of Characters: 1685 1200
No. of Different Words: 172 150
Fourth Root of Number of Words: 4.285 4.2
Average Word Length: 5 4.6
Word Length SD: 2.235 2.4
No. of Words greater than 5 chars: 127 80
No. of Words greater than 6 chars: 90 60
No. of Words greater than 7 chars: 47 40
No. of Words greater than 8 chars: 25 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 18.722 21.0
Sentence Length SD: 5.342 7.5
Use of Discourse Markers (%): 0.556 0.12
Sentence-Text Coherence: 0.32 0.35
Sentence-Para Coherence: 0.522 0.50
Sentence-Sentence Coherence: 0.071 0.07
Number of Paragraphs: 4 4