What is the gradual release of energy from fuel molecules in cells and the convetion thereof into energy rich ATP?

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

A60-tooth gear is connected to a 72-tooth gear.if the smaller gear turns 12 times,how many turns does the larger gear make?

Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants.d- food molecules are broken down in the cells if living things.