托福口语 Task 4

Today, we're going to talk about a fascinating concept in biology called 'behavioral thermoregulation.' This refers to the ways 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 behavior can be just as important as physiology in helping animals survive in extreme environments. Let me give you two examples. First, consider the desert iguana. When the sun is too hot, it climbs onto rocks to bask, but when the temperature rises too much, it moves into the shade of creosote bushes or burrows underground to cool down. This allows it to maintain an optimal body temperature for activity. Second, think about honeybees. On hot days, worker bees collect water and spread it inside the hive, then fan their wings to create evaporation, which cools the hive. In winter, they cluster together and shiver their flight muscles to generate heat, keeping the queen warm. So, behavioral thermoregulation is a versatile strategy that animals use to cope with temperature challenges.