What key factor makes fire ants successful as omnivores?

The success of fire ants as omnivores is largely attributed to their diverse diet. This adaptability allows them to exploit a wide range of food sources, which can include insects, seeds, and even organic debris. By being able to feed on various types of materials, fire ants can thrive in different environments and during times when certain food sources may be scarce. This flexibility in diet enables them to survive and flourish in both urban and rural settings.

Other factors like the ability to farm fungi, high reproduction rate, and defensive nature also play significant roles in the overall survival and effectiveness of fire ants as a species, but it is their diverse diet that directly contributes to their success as omnivores. This varied feeding behavior is crucial for maintaining their population and expanding their territory.