Insect Invaders (Magic School Bus Science Chapter Books (Pb))

When Wanda brings her new ladybugs to school, she just wants Ms. Frizzle to give her some hints on caring for her insect pets. Instead, the whole class gets a field trip. They find out pretty quickly that lots of insects eat other insects for lunch. There is the eight-legged issue of spiders, too. And when Wanda's two ladybugs get lost, the class is on a mission to save the innocent bugs. But is there more to ladybugs than Wanda suspects?