The question lacewing belongs to unicellular animals, snails, mussels belong to mollusks, earthworms belong to annelids, they all belong to invertebrates; sharks, seahorses belong to fish; frogs, toads belong to the amphibian;? Snakes, lizards belong to reptiles, woodpeckers, swallows belong to birds; squirrels, cows, pigs belong to mammals, they belong to vertebrates.

The answer is:

Characteristics?		Name of the animal
Body without vertebrae		The lacewings, snails, mussels, earthworms
Body with vertebrae	Lives in water and breathes through gills	Sharks, seahorses
	Larvae live in water and breathe through gills, adults live on land and breathe through lungs	Frogs, toads
	Body with scales or armor, live on land	? Snakes, lizards
	feathered body, oviparous	woodpeckers, swallows
	hair-covered body, viviparous, lactating	squirrels, cows, pigs