Which of these are examples of mixing and spreading

Aboy with an extra x chromosome probably has which of the following syndromes?

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

What part of the brain is highlighted in the diagram below?