Answer:
ATP is an unstable molecule
Step-by-step explanation:
Recall that ATP and ADP are too unstable to serve as long-term energy storage units. In contrast, glucose has a stable molecular structure, so it stores energy more efficiently than ATP.
#pennfosternotes
See page Biology (v2): Lesson 2: Page 65 in Biology_Lesson 2.pdf
Thanks so much! I hope this helps! =)