Do subs need soil contact as a continuous requirement?

The correct assertion that subs need soil contact as a continuous requirement is based on the essential needs of various species that rely on soil for multiple functions. Soil contact is vital for subs because it provides necessary resources like moisture, essential nutrients, and the right environment for growth and development. Being in direct contact with the soil ensures that these organisms can access water and nutrients required to sustain their life processes and reproductive cycles.

While it's true that there could be scenarios where soil contact might not seem critical at certain stages of life (such as during breeding or specific environmental conditions), the overarching principle is that regular access to soil is fundamental for their survival and health. This consistent connection to the soil helps to support their physiological needs and facilitates their interactions with the ecosystem. Therefore, maintaining continuous soil contact is crucial for the longevity and well-being of these organisms.

In contrast, options that suggest varying needs based on type or situations miss the broader biological necessity that soil contact fulfills for sustenance and habitat connectivity.