The duality that exists in the universe can be created only by conscious entity and the best way to describe it is to call it perceptual dualism – the subjective illusion of duality.
Except living organisms, nature has no means for expression of consciousness on a level of complex thought and it has no means to experience changes within itself without physical senses to do so. Without complex thoughts and some detection mechanisms there cannot be any meaning to any action. This means that the nature is intrinsically non-dualist.