Read the following passage about termite mounds:
For years, biologists believed that termite mounds in the African savannah functioned primarily as solar chimneys, using external wind currents to draw out stale air from the nest. However, recent studies suggest a different mechanism: the mounds act as breathing structures that respond to day-night temperature fluctuations. Researcher Dr. Sarah Cole observed that during the day, the outer walls of the mound absorb heat, causing air to rise in the outer channels. Conversely, at night, the cooling of the outer walls reverses this flow. To support the claim that mound structure is driven by ventilation needs rather than structural stability, researchers pointed out that mounds built in windier regions have more porous outer walls. Furthermore, to demonstrate that temperature regulation is active, sensor readings showed that internal temperatures remained within a one-degree range despite external shifts of over twenty degrees. Lastly, the team noted that when the outer channels were artificially blocked, the termites immediately began excavating new tunnels, proving that the colony monitors and actively maintains air exchange pathways.
Based on the passage, match each claim made by the researchers on the left with the specific evidence from the text that supports it on the right.
- Mound structure is adapted for ventilation rather than stabilityMounds built in windier regions feature more porous outer walls
- The colony actively regulates its internal temperatureSensor readings show internal temperatures fluctuate by less than one degree
- Termites monitor and maintain air exchange pathwaysTermites immediately excavate new tunnels when outer channels are blocked