¿Qué especie cumplió un rol fundamental en la atmósfera (desde la inmensa cantidad de CO2 a O2) necesario para nuestra existencia?

Amarine ecologist has constructed the conceptual model shown in the diagram. what predictions can be made from using this model? where the tertiary consumers get their energy how often primary producers are able to reproduce when bacteria and fungi initiate the process of decomposition whether other secondary consumers are present