Different celestial objects produce different types of spectra. The spectrum of an object is one means of identifying what type of object it is. How different spectra arise is shown in the schematic diagram below.
After a simple reaction breaking down ATP to ADP, the energy released from the breaking of a molecular bond is the energy we use to keep ourselves alive. When the phosphate group is removed. After a simple reaction breaking down ATP to ADP, the energy released from the breaking of a molecular bond is the energy we use to keep ourselves alive.
When your neurons break ATP, there is energy released. But instead of being wasted in a snapping sound, your neurons harness that energy and use it to do all the work that neurons do. What's left over from the breaking of ATP is a molecule called adenosine. As you use more and more energy, the adenosine in your brain builds up.