lizards also thermoregulate and, as in humans, thermoregulation in lizards involves negative feedback. lizards, however, are ectotherms and gain most of their heat from external sources. therefore, they often use behavioral mechanisms to adjust their body temperature. for example, if a lizard's body temperature drops below its normal range, the lizard may seek a sunny resting spot to warm up. what are the stimulus and the response in this example? drag the phrases on the left to complete the sentence on the right. not all phrases will be used.