How does ants know where to find food? And how do they get on like 6th floor of an apartment
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They all go in random directions leaving their scent along the way. If they find food, they grab a piece and go back the direction they came, following their own scent trail and leaving a more scent on top. They continue to follow this scent trail, from food to ant hill and back, strengthening the scent trail along the way. Other ants smell that this scent trail is stronger than the scent trials left by ants that didn’t find food (since those routes are less traveled) and follow it too, leaving their scent trail along the way further strengthening the route to food. Pretty soon you have a highway like scent trial to food being strengthened by every ant that crosses it.
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