Which describes an interaction in which organisms work together so that all organisms in the group benefit?
a. cooperation
b. parasitism
c. commensalism
d. competition

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.