How could a single cell become such a big individual?

Explanation

### Step-by-Step Solution:

1. **Understanding the Single Cell**: The single cell referred to in the question is the zygote. A zygote is formed when a sperm cell fertilizes an ovum (egg cell).

2. **Formation of the Zygote**: The zygote is the first cell of a new organism and contains genetic material from both parents.

3. **Cell Division Process**: After the zygote is formed, it undergoes a process called mitotic division. This is how the zygote develops into a multicellular organism.

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