Define photosynthesis.

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Photosynthesis**: Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy.

2. **Source of Light Energy**: The light energy used in photosynthesis primarily comes from the Sun.

3. **Transformation Process**: During photosynthesis, plants capture light energy and use it to convert water (H2O) and carbon dioxide (CO2) into glucose (C6H12O6) and oxygen (O2).

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