When long-legged ants plug the nest entrances of red harvester ants with which they compete for seeds, it is called

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Interference competition involves one species directly preventing another species from accessing a resource. In this case, the long-legged ants are actively blocking the nest entrances of the competing red harvester ants, therefore interfering with their access to seeds. Allelopathy is the release of chemicals by one species that inhibit the growth or survival of another species. Exploitative competition involves both species using the same resource, but one species using it more efficiently or in greater quantity, leaving less for the other species. Apparent competition occurs when two species share a common predator, and the presence of one species increases the abundance of the predator, which in turn decreases the abundance of the other species.

When Long-Legged Ants Plug the Nest Entrances of Red Harvester