Most Living organisms are unicellular and certain organisms, including humans, are multicellular. They grow and divide, thereby multiplying and building more cells. This claims that they intake food particles that give nutrients to them, which they use to produce energy for the work that cells perform and to produce the substances that a cell or an organism requires.
All living organisms require "oxygen", "water", and "food" to grow. The cells of living things divide, allowing them to grow bigger and to develop as they grow. The cells multiply to form new cells that are distinct from the original cells.
