Question

why ant always move in line

Answer 1

The scent that the ants leave behind is called pheromone. The ants walk in aline because they follow the scent left behind by the leader.

Answer 2

Because they can't move zig zag...hahahahaha..... ok joking

When ants travel, they leave a scent behind. This scent is called pheromone. This scent helps them go back home. Ants follow their leader, and they pick up the scent that is left behind by their leader.