Subterranean termites cannot survive without what?

Subterranean termites are highly dependent on moisture for their survival, making adequate moisture the correct answer. These pests thrive in environments where humidity is sufficient, as it helps them maintain their bodily functions and prevents dehydration. They construct mud tubes to travel between their nests and food sources while retaining moisture. Without access to moisture, subterranean termites would be unable to sustain their colonies and would eventually perish.

In contrast, while wood is their primary food source, it alone isn’t sufficient for their survival without adequate moisture. They can often be found damaging wooden structures; however, if there is no moisture present, they would struggle to live even in the presence of wood. Air is essential for respiration, but subterranean termites can survive in low-oxygen environments when they remain sheltered in their colonies. Light does not play a crucial role in their survival since termites prefer dark, moist conditions and often avoid light during their activities. This preference for moist environments underscores the significance of moisture to their life cycle and colony maintenance.