The reading passage discusses three different theories that try to explain why the ancient community on Easter island perished. However, the lecturer casts doubt on all the proposals made in the article.
First of all, The author of the article claims that people on the island cut forests to clear the land for agriculture and to use the wood for heating, cooking and construction of houses. Deforestation led to erosion of the land. Nevertheless, the speaker in the lecture refutes this argument. he mentions that a credible study showed that the inhabitants replaced the forests with grassland which would prevent erosion.
Second, the author contends that the abundance of food and the absence of predators allowed the overgrowth of rats which fed on the roots and the growing shoots from cut-down trees. As a result, no trees regrew and the lack of food and wood did not allow the population to build canoes to escape the island. Consequently, they perished. The listening points out flaws in this idea. he states that although rats could have contributed to the disruption in the ecosystem, rats could have served as a food source for the island dwellers before they were able to figure out a long-term plan. he indicates that rat bones have been found in the dumpsters on the island, along with chicken bones, which means people could have survived by eating rats.
Finally, the excerpt argues that the fall of the civilization on the island could have been due to war between the long-eared people and the short-eared people. The professor, On the other hand, challenges this point of view. he further elaborates that according to native individuals the war happened around 1680. However, when the spanish viceroy of Peru came to the island, there were still almost 3000 people. Thus, this scenario does not add up.
The reading passage discusses three
different
theories that try to
explain
why the ancient community on Easter
island
perished.
However
, the lecturer casts doubt on all the proposals made in the article.
First of all
, The author of the article claims that
people
on the
island
cut
forests to
clear
the land for agriculture and to
use
the wood for heating, cooking and construction of
houses
. Deforestation led to erosion of the land.
Nevertheless
, the speaker in the lecture refutes this argument.
he
mentions that a credible study
showed
that the inhabitants replaced the forests with grassland which would
prevent
erosion.
Second, the author contends that the abundance of food and the absence of predators
allowed
the overgrowth of rats which fed on the roots and the growing shoots from
cut
-down trees.
As a result
, no trees regrew and the lack of food and wood did not
allow
the population to build canoes to escape the
island
.
Consequently
, they perished. The listening points out flaws in this
idea
.
he
states that although rats could have contributed to the disruption in the ecosystem, rats could have served as a food source for the
island
dwellers
before
they were able to figure out a long-term plan.
he
indicates that rat bones have
been found
in the dumpsters on the
island
, along with chicken bones, which means
people
could have survived by eating rats.
Finally
, the excerpt argues that the fall of the civilization on the
island
could have been due to war between the long-eared
people
and the short-eared
people
. The professor,
On the other hand
, challenges this point of view.
he
further
elaborates that according to native individuals the war happened around 1680.
However
, when the
spanish
viceroy of Peru came to the
island
, there were
still
almost 3000
people
.
Thus
, this scenario does not
add
up.