What is the meaning of this quote?? “Not to know what has been transacted in former times is to be always a child. If no use is made of the labours of past ages, the world must remain always in the infancy of knowledge.”

I thinks the meaning is that you can't achieve anything if you don't put the effort

hope this helps

the of atp are the key to its ability to store and supply energy;

phosphate

the phosphate groups of atp are the key to its ability to store and supply energy. atp releases energy when it breaks bonds between its phosphate groups.