Is a banana turning brown when it is left on the counter a physical change?

Which sentence best describes the formation of igneous rock? a- lava on the surface dries up and makes arock b_melted rocks cools and forms crystals c_rocks under tremendous heat and pressure d_magma is melted rock underground

Is a pencil falling to the floor anon contact force, a force, or a contact force

Which statement accurately represents the arrangement of electrons in bohr’s atomic model?