The reading and the lecture are both contradicting with each other, in terms of the existence of dinosaurs as an endotherm. The author of the article states that since the dinosaurs were reptiles, they could not be an endotherm. However, the lecturer casts doubt about the claim mentioned in the article and refutes all the theories presented in the article.
First of all, according to the passage fossils of dinosaurs in the polar region is the evidence which leads to the conclusion that dinosaurs were endotherm since they must be required to maintain their body temperature in extremely cold climate similarily as other endotherm animals do. On the contrary, the speaker negates the argument presented in the passage. Furthermore, he discusses that there was a possibility that dinosaurs could be migrated to the warmer region in cold climate or used to follow hibernation, and that way, they do not need to maintain their body temperature.
Secondly, the author posits that the position of dinosaur's legs under the body is the evidence that proves that they are not like other reptiles, so their legs were made for running and therefore, they were endotherm animal. Although the lecturer refutes this by asserting that in order to support their huge weight, their legs were placed underneath their body, and it does not have any relation to the physiological activity, like running.
Finally, it is mentioned in the article that having Haversian canals in dinosaur's bone is the strong indicator which proves that they are endotherm. On the other hand, the speaker again opposes the solution and describes that it is true that dinosaurs had Haversian canal in their bone but they had some growth rings as well which indicates the period of time when their growth was stopped or they were growing slow due to protect themselves in extreme cold. However, endotherm animals always show constant and rapid growth. Thus, rapid growth pattern following the slow growth with again rapid growth was the indicator that dinosaurs were not an endotherm.
The reading and the lecture are both contradicting with each
other
, in terms of the existence of dinosaurs as an endotherm. The author of the article states that since the dinosaurs were reptiles, they could not be an endotherm.
However
, the lecturer casts doubt about the claim mentioned in the article and refutes all the theories presented in the article.
First of all
, according to the passage fossils of dinosaurs in the polar region is the evidence which leads to the conclusion that dinosaurs were endotherm since they
must
be required
to maintain their
body
temperature in
extremely
cold
climate
similarily
as
other
endotherm animals do.
On the contrary
, the speaker negates the argument presented in the passage.
Furthermore
, he discusses that there was a possibility that dinosaurs could
be migrated
to the warmer region in
cold
climate or
used
to follow hibernation, and that way, they do not need to maintain their
body
temperature.
Secondly
, the author posits that the position of dinosaur's legs under the
body
is the evidence that proves that they are not like
other
reptiles,
so
their legs
were made
for running and
therefore
, they were endotherm animal. Although the lecturer refutes this by asserting that in order to support their huge weight, their legs
were placed
underneath their
body
, and it does not have any relation to the physiological activity, like running.
Finally
, it
is mentioned
in the article that having
Haversian
canals in dinosaur's bone is the strong indicator which proves that they are endotherm. On the
other
hand, the speaker again opposes the solution and
describes
that it is true that dinosaurs had
Haversian
canal in their bone
but
they had
some
growth
rings
as well
which indicates the period of time when their
growth
was
stopped or
they were growing slow due to protect themselves in extreme
cold
.
However
, endotherm animals always
show
constant and rapid
growth
.
Thus
, rapid
growth
pattern following the slow
growth
with again rapid
growth
was the indicator that dinosaurs were not an endotherm.