Yes, humans are multicellular organisms. This means that our bodies are made up of many different types of cells that work together to form tissues, organs, and organ systems.

Here's why:

* Complex Structure: Humans have a highly complex structure with specialized cells performing specific functions.

* Multiple Cell Types: Our bodies contain trillions of cells, organized into over 200 different cell types, each with its own unique role.

* Cooperation: These cells cooperate and communicate with each other through complex pathways, forming tissues, organs, and ultimately a complete organism.

So, in short, humans are definitely multicellular!