Here's how it works:
1. Sunlight Energy Absorbed: Plants, algae, and some bacteria contain a pigment called chlorophyll, which absorbs sunlight energy, specifically in the red and blue wavelengths.
2. Energy Conversion: This absorbed light energy is used to convert carbon dioxide (CO2) and water (H2O) into glucose (sugar). This process also releases oxygen (O2) as a byproduct.
3. Energy Storage: The glucose produced is a form of chemical energy that is stored in the plant's cells. This stored energy is the foundation of the food chain.
Therefore, the process of photosynthesis is how sunlight energy enters the biotic world and becomes the basis for all life on Earth.
Here's a simple way to visualize it:
Sunlight + CO2 + H2O --> Glucose + O2
This energy stored in glucose is then transferred to other organisms through consumption (herbivores eating plants, carnivores eating herbivores, etc.). This flow of energy sustains the entire biotic world.
