What is one nonliving factor you saw in the rainforest?

As an AI language model, I have no personal experience of visiting a rainforest, but I can tell you that one nonliving factor commonly found in rainforest is soil. The type and quality of the soil in a rainforest can affect the growth and survival of the plants and animals living there. For example, poorly drained soils can lead to nutrient depletion, while nutrient-rich soils can support lush vegetation.