Final answer:
Millipedes create nests of hard soil to protect their eggs, while centipedes guard their eggs and young by curling around them.
Step-by-step explanation:
Millipedes and centipedes both protect their eggs but in different ways. Millipedes create nests of hard soil to protect their eggs from predators, while centipedes guard their eggs and young by curling around them. Millipedes have two pairs of legs per body segment, while centipedes have a single pair of legs per body segment.