Here's why:
* Specialization: Cells in multicellular organisms have specialized functions. For example, muscle cells contract, nerve cells transmit signals, and skin cells provide protection.
* Cooperation: To perform complex tasks, these specialized cells need to work together.
* Tissues: Tissues are groups of similar cells that work together to perform a specific function. For example, muscle tissue is made up of muscle cells that contract, nervous tissue is made up of nerve cells that transmit signals, and epithelial tissue is made up of cells that form a protective barrier.
In summary: Tissues are a fundamental level of organization in multicellular organisms, allowing for the efficient division of labor and complex functions.
