To determine the information that should be included in box [tex]$C$[/tex] for the "Desert" biome under "Climatic Conditions," let's carefully analyze the characteristics associated with deserts.
The desert biome is generally characterized by:
1. Low precipitation (deserts often receive less than 25 centimeters of rain per year).
2. High temperatures during the day and often significant temperature drops at night.
3. Very dry soil conditions.
Given these characteristics, the information that should be included in box [tex]$C$[/tex] is:
```
Low rainfall, extreme temperature variations
```
Thus, box [tex]$C$[/tex] should contain information about the desert's climatic conditions that highlight the low rainfall and the significant temperature changes typical to deserts.