Why do wasps build paper nests?

Answer: Chewing wood makes pulp

Chewing wood makes pulp ✓ — Correct! Wasps scrape wood fibers from trees, fences, and dead plants with their mandibles. They chew the wood, mixing it with saliva to create paper pulp. They spread thin layers to build hexagonal cells—just like paper mache! It's lightweight and insulating.

They collect paper from trash — Wrong. Wasps don't use human-made paper. They create their own by chewing natural wood fibers mixed with saliva—they're the original papermakers!

Mud wouldn't stick together — Wrong. Some wasps do use mud (like mud daubers), but paper wasps specifically evolved to use wood pulp because it's lighter and easier to build complex structures.