The process of photosynthesis requires three main raw materials to synthesise energy in the form of ATP (Adenosine Triphosphate). Those three raw materials are; Carbon dioxide, Water, and Light.

Learn about photosynthesis - how green plants make their own food by using sunlight to convert CO2 into sugar. BBC Bitesize Scotland National 5 Biology.

As the time of pedaling increases, oxidation products (lactic acid) build up in the muscles and fatigue starts to decrease the sustainable power. At long times the steady state energy conversion ...