The part of the story that shows the influence of a character's actions is Tina's interaction with Mr. Pamuk.
The plot has been influenced by the actions of two characters, Tina and Mr. Pamuk. It was Tina's courage and determination to face her fear and explore what lies beyond her fear, that unlocks a new world to her.
Mr. Pamuk understood little Tina's fears. As a herpetologist, he was familiar with lizards. And his love for both reptiles and humans leads him to introduce Tina to lizards, snakes, turtles, crocodiles, and frogs.
Tina was introduced to the amazing characteristics of lizards. About the way, they can change the color of their skin. To Tina's surprise, she gets to know that lizards can even walk on water.
These facts about reptiles awed Tina, and she gets curious to know more. She asks Mr. Pamuk to show her his pet iguana. Mr. Pamuk is too glad at the request and immediately accepts.