net photosynthesis

例句：

1. 1. Plants use photosynthesis to convert sunlight into energy.
   植物通过光合作用将阳光转化为能量。
2. 2. The forest ecosystem is crucial for maintaining the balance of the environment.
   森林生态系统对于维持环境平衡至关重要。
3. 3. The researchers found that the efficiency of photosynthesis in different plants varied greatly.
   研究人员发现不同植物的光合作用效率差异很大。