How do her cells use these molecules to release energy for her body to run?

In cells use oxygen to release energy stored in sugars such as glucose. In fact, most of the energy used by the cells in your body is provided by cellular respiration. Just as photosynthesis occurs in organelles called chloroplasts, cellular respiration takes place in organelles called mitochondria.

Decomposition is the cycle at which bacteria breaks down any organic material into the soil