What is the original source of all energy for living organisms?

Which would be the most useful source of evidence to support mcneill's contention?

Si el equipo no fuera bueno no con el entrenador.

The spermists believed that: the male made the only hereditary contribution to the offspring the male and female traits were blended in the offspring the female made the only hereditary contribution to the offspring the male and the female made equal contributions to the next generation