Complex sentence: The lionesses appear to celebrate the continuing circle of life before the animals present their newborn cub, the future lion king, and the circle of life begins again with Simba and Nala having a newborn lion cub of their own.
Split into simpler sentences: The lionesses appear to celebrate the continuing circle of life before the animals as they present a newborn cub, the future lion king. The circle of life begins again with Simba and Nala having a newborn lion cub of their own.