At the end of the Traiassic period 200 million years ago, there was a large extinction happened. Both the lecture and the reading talk about this massive extinction and what is the caused for this extinction. The former says that there is still no good explanation for what was happened in that period, while the latter emphasizes three explanation for this extinction.
To begin with, one of these explanation is related to the decline of sea levels. The professor disagrees with this point. In fact, she mentions that most of the ocean populations that live in the shallows and land species are adapted with gradual changes, and this fluctuation is happened gradual, which was for 7 million years. However, the text highlights that fluctuating effect on food chains worldwide, leading to mass extinctions.
Furthermore, the second point of this extinction revolves around massive climate cooling. The instructor sees this idea differently. She believes that SO2 always combines with water and there is no explanation to stay at the atmosphere. She adds that it is unlikely to any volcanic eruption to release that amount of SO2. On the other hand, the passage claims that increasing with volcanic activity leads to increase the amount of SO2. SO2 is one of the cause that change climate.
Last but not least, the final argument is here about the Triassic period is connected with asteroid strike. The speaker arguments this theory because it is not accurate information. The women introduces that if this is happened, it goes for 12 million years ago, which is way before the extinction was happened. Nevertheless, the author points out that
At the
end
of the
Traiassic
period 200 million years ago, there was a large
extinction
happened
. Both the lecture and the reading talk about this massive
extinction
and what is the caused for this
extinction
. The former says that there is
still
no
good
explanation
for what was
happened
in that period, while the latter emphasizes three
explanation
for this extinction.
To
begin
with, one of these
explanation
is related
to the decline of sea levels. The professor disagrees with this point. In fact, she mentions that most of the ocean populations that
live
in the shallows and land species
are adapted
with gradual
changes
, and this fluctuation is
happened
gradual, which was for 7 million years.
However
, the text highlights that fluctuating effect on food chains worldwide, leading to mass extinctions.
Furthermore
, the second point of this
extinction
revolves around massive climate cooling. The instructor
sees
this
idea
differently
. She believes that SO2 always combines with water and there is no
explanation
to stay at the atmosphere. She
adds
that it is unlikely to any volcanic eruption to release that amount of SO2.
On the other hand
, the passage claims that increasing with volcanic activity leads to increase the amount of SO2. SO2 is one of the cause that
change
climate.
Last
but
not least, the final argument is here about the Triassic period
is connected
with asteroid strike. The speaker arguments this theory
because
it is not accurate information. The women
introduces
that if this is
happened
, it goes for 12 million years ago, which is way
before
the
extinction
was
happened
.
Nevertheless
, the author points out that