Complex sentence: The large cutting tools of the Acheulian technocomplex become smaller, more complex tools that are better suited towards the needs of highly diversified environments, but composite tools represent a new level of innovation in their increased efficacy and more complex manufacturing process.
Split into simpler sentences: The large cutting tools of the Acheulian technocomplex become smaller, as more complex tools are better suited towards the needs of highly diversified environments. Composite tools represent a new level of innovation in their increased efficacy and more complex manufacturing process.