Complex sentence: The plant becomes progressively drier over the summer, it leaves yellowing and growing spikes, and before it dies it detaches from the root to be pushed around by the wind and disperse its seeds for the next year's harvest.
Split into simpler sentences: The plant becomes progressively drier over the summer, it leaves yellowing and growing spikes. Before it dies it detaches from the root to be pushed around by the wind and disperse its seeds for the next year's harvest.