Final answer:
The significance of surface area to volume ratio in controlling body temperature is that it affects the heat exchange between an organism and its environment.
Step-by-step explanation:
The significance of surface area to volume ratio in controlling body temperature is that it affects the heat exchange between an organism and its environment. Smaller organisms with a larger surface area to volume ratio heat up more quickly than larger organisms, which have a smaller surface area to volume ratio. This is because smaller organisms have more surface area available for heat exchange with their environment.
For example, consider two organisms with the same mass but different sizes. The smaller organism will have a higher surface area to volume ratio, allowing it to lose heat more quickly and cool down faster. On the other hand, the larger organism will have a lower surface area to volume ratio, making it harder for it to lose heat and cool down.