Ants walk in a line because they follow pheromone trails left by other ants. When one ant finds food, it leaves a chemical scent on the ground as it returns to the colony. Other ants detect this trail and follow it, reinforcing it with their own pheromones. This creates a well-defined path, allowing the colony to efficiently transport food and work together.
Why do ants walk in a line? Let's take a look at what the story in the book says!
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