How do Ladybird beetles and Dragonflies act as biocontrol agents?

Explanation

**Step-by-Step Solution:**

1. **Definition of Biocontrol**:
Biocontrol refers to the use of living organisms to control pest populations. This method is environmentally friendly and reduces the reliance on chemical pesticides.

2. **Role of Ladybird Beetles**:
Ladybird beetles, often recognized by their distinctive red and black markings, are effective biocontrol agents. They primarily feed on aphids, which are common agricultural pests that can damage crops. By preying on aphids, ladybird beetles help to keep their populations in check, thus protecting plants from potential harm.

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