How do massive, newborn stars influence their surrounding stellar nursery environment, such as in the Lagoon Nebula?

Their heat and radiation eventually blow away the remaining gas and dust, carving out cavities within the nebula

The relationship between a massive star and its birth cloud is one of dynamic interaction and eventual destruction of the surrounding material. When massive stars are formed within stellar nurseries, the intense heat and powerful radiation they emit act as a disruptive force on the raw material from which they originated. This energy pushes the surrounding gas and dust away, effectively clearing out space and creating distinct empty regions or cavities within the larger nebulosity. An example of this effect, where the star's energy shapes its environment, is observed in the Lagoon Nebula.