This Is Challenge 2. I really need the answers to this too. Please make sure you have an explanation.

whats the question? im not quite understanding your question.

the soviet union wanted to impose communist governments in eastern europe.

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.