Identify the trophic levels $(1, 2, 3$ and $4)$ in the provided figure.

(N/A) In an ecosystem,energy flows from the sun to producers and then through various consumer levels.
$(1)$ represents the Producers (e.g.,plants),which occupy the first trophic level.
$(2)$ represents the Primary Consumers (e.g.,herbivores like insects),which occupy the second trophic level.
$(3)$ represents the Secondary Consumers (e.g.,small birds),which occupy the third trophic level.
$(4)$ represents the Tertiary Consumers (e.g.,top predators like vultures),which occupy the fourth trophic level.
Thus,the sequence is: $(1)$ Producers,$(2)$ Primary Consumers,$(3)$ Secondary Consumers,$(4)$ Tertiary Consumers.