 The third way which probably warrants a whole presentation on its own is the process called photosynthesis and this is where plants, so a component of the biosphere can harness light energy from the Sun and convert, so they basically take CO2 from the atmosphere plus water and in the presence of light energy generate glucose which we can call food if you like and the byproduct of that is oxygen which is very convenient because there are a whole lot of us, we other organisms that quite like to use oxygen for our own respiration. So this process photosynthesis is another major mechanism for transferring energy from the Sun into the biosphere in particular.