Complex sentence: All those strategies working around the flint and other stones are not repeated along the secuence, but they change in the differente layers, probably adapted to different etnic traditions and-of course-adapted the needs of the neandertals and the enviroment constrains.
Split into simpler sentences: All those strategies working around the flint and other stones are not repeated along the secuence. They change in the differente layers, probably adapted to different etnic traditions and-of course-to the needs of the neandertals and the enviroment constrains.