Your colleague proposes to test the mechanism of ant navigation by placing a food source 7 meters (m) from the nest. she then takes ants from the nest and places them in a spot that is 4 m from the nest and 3 m from the food source. based on the previous data, where do you expect the ants to start searching for their nest on their return trip?

She placed a food source = 7 meters (m) from the nest
she then takes ants from the nest and places them in a spot that is 4 m from the nest and 3 m from the food source

The answer is that the ants are expected to start searching for their nest on their return trip "after they have traveled 3 m from the food source".

The lions ecological niche includes its behavior and its position in the food web.  Ecological niche is the position and role a species has in its environment, how it meets its need for food and shelter, how it survives, and how it reproduces. The niche includes all of its interactions with the biotic and abiotic factors of its environment.