Question

what biotic (living) factor is a threat to leafcutter ants?
birds
fungus
other ants
spider monkeys

Explanation:

Leafcutter ants face threats from various biotic factors. Other ants can compete with them for resources like food and nesting sites, and may also engage in aggressive interactions. Birds, fungi, and spider - monkeys are not the most common or direct threats compared to other ants.

Answer:

Other ants