▶ Your Answer : In the reading passage, Endotherms had a
property that keep their body temperature, but the passage said that There are
some evidences that support that dinosaurs were Endotherm. However, the
professor in the lecture gives several reasons as a rebuttal to the author’s
point.
First of all, the professor contends that
the argument cannot be proved by polar dinosaur fossils. This is due to the
fact that generally dinosaurs tended to live in warmer places. They don’t have
abilities to increase their body temperature. Also, they have a property that
take a long sleep in every winters. This casts doubt on the reading passage’s
claim that dinosaur fossils discovered in polar regions are evidence.
Second, the professor argues that the
connection between endothermy leg position and movement is not necessary. To be
specific, dinosaurs didn’t need a lot of energy to run. Also, they had enough
large legs to do physical activities, so they didn’t need underneath. This
counters the reading passage’s claim that the leg position and movement is an
evidence to support that dinosaurs were endotherms since their leg positions,
underneath, can run more efficiently.
Finally, the professor insists that the connection
between endothermy and Haversian canals that is bone structure cannot be true.
In the passage, since the bone structure, endothermy could grow quickly.
However, not only dinosaurs grew slowly but also after growing, the growth was
stopped. Also, the structure has tended to be discovered in warmer places. This
refutes the reading passage’s claim that since the animal has Haversian canals,
it is an evidence that dinosaurs were endotherms |