Young multicelled organisms usually start out small, then grow in size and increase in complexity. This process is called

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The process described involves the growth in size and increase in complexity, which are characteristic of development. Reproduction and heredity involve passing on genetic information to the next generation, while evolution refers to changes in populations over time through natural selection. Metabolism involves the chemical processes that occur within an organism to maintain life.

Young Multicelled Organisms Usually Start Out Small, Then Grow in Size