Topsoil is a, less fertile than the c horizon b , rich in minerals and organic materials c, found below the b horizon d, very resistant to wind erosion

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.