What is autocatalysis?

Explanation

### Step-by-Step Solution:

1. **Definition of Autocatalysis**:
Autocatalysis refers to a process in which a product of a reaction acts as a catalyst for that same reaction. In simpler terms, it is when a substance that is produced during a chemical reaction helps to speed up the reaction itself.

2. **Understanding the Reaction**:
Consider a reaction where a substrate (let's call it A) is converted into a product (B). Normally, a catalyst is an external substance that speeds up this conversion without being consumed in the process.

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