Help me to this and I’ll give you brain list

Arock collection comes from which part of earth?

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.

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z