Give one example of bioinsecticide

Explanation

**Step-by-Step Solution:**

1. **Understanding Bioinsecticides**: Bioinsecticides are natural pesticides derived from living organisms. They are used to control pest populations in agriculture without the harmful effects associated with synthetic chemicals.

2. **Identifying a Common Bioinsecticide**: One of the most well-known bioinsecticides is **Bacillus thuringiensis (Bt)**. This is a bacterium that produces proteins toxic to certain insects.

3. **Application of Bacillus thuringiensis**: When insects ingest these proteins, it leads to gut swelling and ultimately death of the insect. This makes Bt a highly effective and environmentally friendly option for pest control.

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