Pterosaurs were reptiles that had wings, and they were big creatures.

Pterosaurs were reptiles that had wings, and they were big creatures. The article discusses Pterosaurs were not able to fly because of: their slow metabolism, their huge weight, and their legs' weakness for jump. On the contrary, the professor asserts Pterosaurs possibly could fly, and cites three reasons to reject points in the reading. First, the reading states all current reptiles are cold-blooded. Cold-blooded animals possess a slow metabolism that gives them lower energy in comparison to warm-blooded animals. As a result, they suffer from a shortage of adequate energy to fly. Conversely, the professor claims, the fossils of Pterosaurs reveal their bodies were covered with fur. Since only the warm-blooded animals enjoy fur and hair, the Pterosaurs were warm-blooded. Consequently, they have enough energy for flight. Second, the reading argues Pterosaurs were very big and heavy. Pterosaurs too much weight opposed the ability to fly and it caused them to fail to flap their wings efficiently and fast enough. However, the lecturer points out their anatomy were appropriate for flying because they had hollow bones. The hollow bones mean while they were huge, they were light. Finally, the reading asserts the discovered fossils of Pterosaurs shows their legs' muscles were not powerful enough for gaining speed and energy to jump. In contrast, the professor states contemporary birds have two limbs and only these two limbs help them to take off, However, the Pterosaurs had four limbs and took advantage of the potential in the four limbs. For example, bats are animals that have four limbs and are able to fly. To sum, the reading claims Pterosaurs were cold-blooded animals that had not the power of flight. However, the professor indicates the Pterosaurs possibly could fly using an array of reasons and various examples.