Answer: The main way the thermal energy is transferred from the rock to the lizard is by conduction.
The lizard stretches out and warms itself by lying on a warm rock. The rock becomes warm as the sun transfers its thermal energy by radiation to the rock. The thermal energy to the lizard by the rock is transferred by direct contact through conduction. The air above the rock and the lizard also gets heated up and the heat is transferred through convection.
septum is present between the two ventricles and separates the oxygenated and deoxygenated blood. hence if it gets ruptured then the two blood will mix up. thanks