Would you expect more primary consumers or tertiary consumers within an ecosystem?

There are more primary consumers within an ecosystem because they gain more energy than tertiary consumers from the energy pyramid, allowing for them to grow in numbers quicker than the other.

Energy Pyramid

The energy pyramid is a triangular shaped diagram that consists of primary, secondary and tertiary consumers. the primary is on top, secondary in the middle and tertiary on the very bottom. Primary consumers give energy to secondary consumers.

thinking it would be physical characteristics

the fossil record provides evidence of a common ancestor to many species.