Efficient where it has to be. Plants only convert between 3 and 6 percent of solar energy. https://en.m.wikipedia.org/wiki/Photosynthetic_efficiency https://en

Efficient where it has to be. Plants only convert between 3 and 6 percent of solar energy. https://en.m.wikipedia.org/wiki/Photosynthetic_efficiency https://en.m.wikipedia.org/wiki/Photosynthetic_efficiency