When would a point mutation occur? . O It can occur before and after cell division
O Before the cell divides
O After the cell divides
O Before DNA replication

Which spheres are involved when sedimentary rocks formed from parts of seashells at the bottom of the ocean? a.) biosphere, atmosphere, geosphereb.) geosphere, hydrosphere, biosphere c.) geosphere, exosphere, hydrosphered.) hydrosphere, biosphere, atmosphere