Living organisms can be classified into two main types based on the number of cells they are composed of: unicellular and multicellular. Multicellular organisms are made up of more than one cell, and these cells are specialized to perform specific functions within the organism.
Some examples of multicellular organisms include humans, animals, plants, and fungi. These organisms exhibit a high level of complexity and organization, allowing them to carry out a wide range of functions to survive and thrive in their environments.