In which way have microbes played a major role in controlling diseases caused by harmful bacteria?

Explanation

**Step-by-Step Solution:**

1. **Understanding Microbes**: Microbes include a variety of microorganisms such as bacteria, viruses, fungi, and protozoa. They can be classified into two categories: harmful (pathogenic) and beneficial (useful) microbes.

2. **Role of Harmful Bacteria**: Harmful bacteria, also known as pathogens, can cause diseases in humans and other organisms. These diseases can range from mild to severe and can lead to significant health issues.

3. **Beneficial Bacteria**: Not all bacteria are harmful. Some bacteria are beneficial and play a crucial role in various biological processes, including the production of antibiotics.

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