托福口语 Task 4

Today, we're going to talk about a fascinating concept in animal behavior called 'behavioral thermoregulation.' This is when animals actively adjust their behavior to control their body temperature, rather than relying solely on physiological mechanisms like sweating or shivering. The main point is that these behaviors can be surprisingly sophisticated, allowing animals to thrive in extreme environments. Let me give you two examples. First, consider the desert iguana. When the sun gets too intense, it will climb onto a rock and then elevate its body on its front legs, creating a gap between its belly and the hot surface. This allows cool air to circulate underneath, preventing overheating. Second, think about honeybees. On hot days, worker bees will collect water and bring it back to the hive. They then spread the water over the comb and fan their wings, creating evaporative cooling. This behavior keeps the hive at a safe temperature for the developing larvae. So, you see, these animals are not just passive victims of their environment; they use clever behavioral strategies to regulate their body heat.