To get copper from the solid phase to the liquid phase must of the copper sample

What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

What happens when the number of protons in an atom changes