John’s grandparents make wine for special occasions. they add a pinch of yeast to crushed grapes. over time, this action releases carbon dioxide, and the results is a homemade wine. what chemical process do the grapes undergo?

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

Which direction does the energy flow in this energy pyramid ?

Based on the diagram, which of the following best describes ways in which the physical appearance of h. neandertalensis and h. sapiens differ?