How many types of insects are there in the world ... which is the part of the body between the head and abdomen. Most insects also have wings, although a few, like fleas, don’t.

Most insects also have wings, although a few, like fleas ... Instead of one lens per eye, they have many: a fly has 5,000 lenses; a dragonfly has 30,000. These types of eyes, though not great for ...