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The lecture completely refutes the passage.

The lecture completely refutes the passage. jR17X

The lecture completely refutes the passage. It is said in the lecture that predators are the cause of the decreased number of the otter population in a coast of Alaska. Pollution is not the main reason for this problem as the passage says. The passage points out that, pollution is main factor that changed the population of otters adversely. However, the speaker says that researches have shown that the predatory hypothesis is true. If the pollution was the cause, then infection would kill all the otters, but otter population just decreased, which means a predator ate some otters. Contrary to the belief in the passage that, pollution is the main reason to the decreased number of sea mammals such as otters and seals. It is said in the lecture, that humans caused disappearance of whales. Because the orcas can not find whales to eat, they possibly started to eat the small mammals like otters and seals. Lastly, the passage says that in some areas the otter population remained stable which is explained by ocean currents or other factors. However, the lecture says that the orcas can easily hunt on the coastal side, but they cannot go to rocky places where other otters live. So, it causes a fluctuation in the decrease of otter population.

The You use this word too often, consider replacing it withdiscourseinstructionaddress
lecture
 completely refutes the You use this word too often, consider replacing it withsentencetextsectiontransitionportionverse
passage
. It is said
 in the You use this word too often, consider replacing it withdiscourseinstructionaddress
lecture
 that predators are the cause of the decreased number of the otter You use this word too often, consider replacing it withsocietypopulacepeoplecommunityculturestate
population
 in a coast of Alaska. You use this word too often, consider replacing it withabuseinfectioncorruptiondeterioration
Pollution
 is not the main reason for this problem as the You use this word too often, consider replacing it withsentencetextsectiontransitionportionverse
passage
 says.

The You use this word too often, consider replacing it withsentencetextsectiontransitionportionverse
passage
 points out that, You use this word too often, consider replacing it withabuseinfectioncorruptiondeterioration
pollution
 is main factor that This phrase/word (depending on the context) can be potentially replaced with :alteredadjusted
changed
 the You use this word too often, consider replacing it withsocietypopulacepeoplecommunityculturestate
population
 of otters adversely
. However
, the speaker says that researches have shown that the predatory hypothesis is true. If the You use this word too often, consider replacing it withabuseinfectioncorruptiondeterioration
pollution
 was the cause, then infection would kill all the otters, This phrase/word is too simple and can be replaced with:on the contrary
but
 otter You use this word too often, consider replacing it withsocietypopulacepeoplecommunityculturestate
population
This phrase/word is too simple and can be replaced with:merely
just
 decreased, which means a predator ate This phrase/word is too simple and can be replaced with:a number of
some
 otters.

Contrary to the belief in the You use this word too often, consider replacing it withsentencetextsectiontransitionportionverse
passage
 that, You use this word too often, consider replacing it withabuseinfectioncorruptiondeterioration
pollution
 is the main reason to the decreased number of sea mammals such as otters and seals. It is said
 in the You use this word too often, consider replacing it withdiscourseinstructionaddress
lecture
, that humans caused disappearance of whales. This phrase/word is too simple and can be replaced with:due to the factin light of the fact thatowing to the fact that
Because
 the orcas can not find whales to eat, they possibly
This phrase/word (depending on the context) can be potentially replaced with :initiated
started
 to eat the This phrase/word is too simple and can be replaced with:tiny
small
 mammals like otters and seals.

Lastly
, the You use this word too often, consider replacing it withsentencetextsectiontransitionportionverse
passage
 says that in This phrase/word is too simple and can be replaced with:a number of
some
 areas the otter You use this word too often, consider replacing it withsocietypopulacepeoplecommunityculturestate
population
 remained stable which is This phrase/word (depending on the context) can be potentially replaced with :interpreted
explained
 by ocean currents or other factors. However
, the You use this word too often, consider replacing it withdiscourseinstructionaddress
lecture
 says that the orcas can easily
 hunt on the coastal side, This phrase/word is too simple and can be replaced with:on the contrary
but
 they cannot go to rocky places where other otters This phrase/word (depending on the context) can be potentially replaced with :reside
live
. This phrase/word is too simple and can be replaced with:consequently
So
, it causes a fluctuation in the decrease of otter You use this word too often, consider replacing it withsocietypopulacepeoplecommunityculturestate
population
. 