why didn’t the plants and animals in the biodome have enough energy storage molecules?

The plants and animals in the biodome did not have enough energy storage molecules primarily because the producers (plants) were unable to photosynthesize efficiently. This inefficiency was due to insufficient essential nutrients such as nitrogen and phosphorus and possibly a decrease in carbon dioxide levels in the air, which is necessary for photosynthesis. Without enough carbon dioxide and sunlight, producers could not make enough energy storage molecules, disrupting the energy flow within the ecosystem. Additionally, a decrease in decomposers, which recycle nutrients and contribute to carbon dioxide production through cellular respiration, may have played a role by lowering carbon dioxide availability. As a result, the energy storage molecules that both plants and animals rely on for survival were insufficiently produced in the biodome.