Final answer:
Ectotherms can change their body temperatures through behavioral adjustments.
Step-by-step explanation:
Ectotherms, or cold-blooded animals, can change their body temperatures through behavioral adjustments. These adjustments involve changes in their actions or movements to regulate their temperature. For example, they may seek cooler areas during hot days to prevent overheating, or they may bask in the sun to warm up on cold days.