The photosynthesis of plants is the most effective process of fixing solar light energy on earth. The oil and natural gas consumed by humans are actually the direct or indirect products of plant photosynthesis in ancient times. The earth produces 173 billion to 220 billion tons of materials each year through photosynthesis, and the energy contained therein is equivalent to 10 to 20 times the total energy consumption of the world, but the current utilization rate is less than 3%. Photosynthesis is the best example of the efficient use of solar energy. Deciphering the mysterious mechanism of photosynthesis will lay the foundation for the establishment of an artificial photosynthesis system and the development of clean and efficient new energy.
The main topic of the passage is the importance of the photosynthesis mechanism.