Segmentation allows regional specialization. Flight move freely because they're small and winged. Eggs have thick membrane and some packaged in egg case. Metamorphosis keeps life stages from competing directly with each other. Communicate with tactile, auditory, visual, chemical signals.
Ants use pheromones to mark trails.
Food webs for birds, mammals, amphibians, reptiles, fish. Maggots eat detritus and recycle nutrients Products like beeswax and honey, shellac from insects feeding on tree sap. Centipedes have 1 pair legs on each segment. Long legs to run. Carnivorous on insects Poison claws behind head Millipedes have 2 pair legs on each segment.