How does food poisoning occur? Why should we preserve our food?

Explanation

### Step-by-Step Solution

**Step 1: Understanding Food Poisoning**
Food poisoning occurs when we consume food that is contaminated with harmful microorganisms such as bacteria, fungi, or molds. These microorganisms can grow on food and produce toxic substances.

**Step 2: Role of Microorganisms**
The main culprits of food poisoning are bacteria, fungi, and molds. These microorganisms not only multiply in food but also release metabolic products, which can be toxic. For example, certain fungi produce toxins known as mycotoxins, which can be extremely harmful.

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