A zoologist recorded the internal core body temperature of an Alpine marmot (Marmota marmota), a mammal, and a viviparous lizard (Zootoca vivipara), a reptile, across a range of ambient environmental temperatures during the summer. The findings are summarized in the table below:
| Ambient environmental temperature (°C) | Alpine marmot core body temperature (°C) | Viviparous lizard internal body temperature (°C) |
|---|---|---|
| 0 | 38.7 | 0.3 |
| 8 | 38.9 | 8.2 |
| 16 | 39.0 | 16.1 |
| 24 | 39.2 | 23.9 |
| 32 | 39.4 | 31.8 |
With reference to metabolic processes, explain the physiological importance of the Alpine marmot maintaining its core body temperature within a narrow range around 39°C.
