Pls answer this, need help in homework.

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

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

What does the cell nucleus do or, how does it function?